`FileNotFoundException: ...\utbotJs\tempBase.json` on test generation for file with `import`

[tyuldashev]

Description
In case JS file contains import, test generation fails with exception FileNotFound.

To Reproduce

1. Install UnitTestBot plugin built from main in IntelliJ IDEA
2. On plugin settings page enable support for Experimental languages
3. Open some JS project
4. Generate tests for following code:

import Division from './Divison';

class TestError {
  foo() {
    return new Division();
  }
}

where Division is just empty class:

export default class Division {

}

Expected behavior
Tests are generated or no tests are generated without errors.

Actual behavior
Tests are not generated, exception has been thrown.

Screenshots, logs

java.io.FileNotFoundException: C:\Users\t00814305\IdeaProjects\javascript-algorithms\utbotJs\tempBase.json (The system cannot find the file specified)
	at java.base/java.io.FileInputStream.open0(Native Method)
	at java.base/java.io.FileInputStream.open(FileInputStream.java:216)
	at java.base/java.io.FileInputStream.<init>(FileInputStream.java:157)
	at kotlin.io.FilesKt__FileReadWriteKt.readText(FileReadWrite.kt:125)
	at kotlin.io.FilesKt__FileReadWriteKt.readText$default(FileReadWrite.kt:125)
	at service.coverage.CoverageService$Companion.getBaseCoverage(CoverageService.kt:51)
	at service.coverage.CoverageServiceProvider.<init>(CoverageServiceProvider.kt:91)
	at api.JsTestGenerator$runFuzzingFlow$1.invokeSuspend(JsTestGenerator.kt:259)
	at api.JsTestGenerator$runFuzzingFlow$1.invoke(JsTestGenerator.kt)
	at api.JsTestGenerator$runFuzzingFlow$1.invoke(JsTestGenerator.kt)
	at kotlinx.coroutines.flow.SafeFlow.collectSafely(Builders.kt:61)
	at kotlinx.coroutines.flow.AbstractFlow.collect(Flow.kt:230)
	at api.JsTestGenerator$makeTestsForMethod$1.invokeSuspend(JsTestGenerator.kt:172)
	at api.JsTestGenerator$makeTestsForMethod$1.invoke(JsTestGenerator.kt)
	at api.JsTestGenerator$makeTestsForMethod$1.invoke(JsTestGenerator.kt)
	at org.utbot.common.ConcurrencyKt$runBlockingWithCancellationPredicate$1$job$1.invokeSuspend(Concurrency.kt:39)
	at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
	at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:106)
	at kotlinx.coroutines.EventLoopImplBase.processNextEvent(EventLoop.common.kt:284)
	at kotlinx.coroutines.BlockingCoroutine.joinBlocking(Builders.kt:85)
	at kotlinx.coroutines.BuildersKt__BuildersKt.runBlocking(Builders.kt:59)
	at kotlinx.coroutines.BuildersKt.runBlocking(Unknown Source)
	at kotlinx.coroutines.BuildersKt__BuildersKt.runBlocking$default(Builders.kt:38)
	at kotlinx.coroutines.BuildersKt.runBlocking$default(Unknown Source)
	at org.utbot.common.ConcurrencyKt.runBlockingWithCancellationPredicate(Concurrency.kt:38)
	at api.JsTestGenerator.makeTestsForMethod(JsTestGenerator.kt:171)
	at api.JsTestGenerator.run(JsTestGenerator.kt:131)
	at org.utbot.intellij.plugin.language.js.JsDialogProcessor$createTests$1.run(JsDialogProcessor.kt:195)
	at com.intellij.openapi.progress.impl.CoreProgressManager.startTask(CoreProgressManager.java:428)
	at com.intellij.openapi.progress.impl.ProgressManagerImpl.startTask(ProgressManagerImpl.java:115)
	at com.intellij.openapi.progress.impl.CoreProgressManager.lambda$runProcessWithProgressAsynchronously$6(CoreProgressManager.java:478)
	at com.intellij.openapi.progress.impl.ProgressRunner.lambda$submit$4(ProgressRunner.java:251)
	at com.intellij.openapi.progress.ProgressManager.lambda$runProcess$0(ProgressManager.java:71)
	at com.intellij.openapi.progress.impl.CoreProgressManager.lambda$runProcess$2(CoreProgressManager.java:186)
	at com.intellij.openapi.progress.impl.CoreProgressManager.lambda$executeProcessUnderProgress$13(CoreProgressManager.java:604)
	at com.intellij.openapi.progress.impl.CoreProgressManager.registerIndicatorAndRun(CoreProgressManager.java:679)
	at com.intellij.openapi.progress.impl.CoreProgressManager.computeUnderProgress(CoreProgressManager.java:635)
	at com.intellij.openapi.progress.impl.CoreProgressManager.executeProcessUnderProgress(CoreProgressManager.java:603)
	at com.intellij.openapi.progress.impl.ProgressManagerImpl.executeProcessUnderProgress(ProgressManagerImpl.java:61)
	at com.intellij.openapi.progress.impl.CoreProgressManager.runProcess(CoreProgressManager.java:173)
	at com.intellij.openapi.progress.ProgressManager.runProcess(ProgressManager.java:71)
	at com.intellij.openapi.progress.impl.ProgressRunner.lambda$submit$5(ProgressRunner.java:251)
	at com.intellij.openapi.progress.impl.ProgressRunner.lambda$launchTask$18(ProgressRunner.java:465)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
	at java.base/java.util.concurrent.Executors$PrivilegedThreadFactory$1$1.run(Executors.java:702)
	at java.base/java.util.concurrent.Executors$PrivilegedThreadFactory$1$1.run(Executors.java:699)
	at java.base/java.security.AccessController.doPrivileged(AccessController.java:399)
	at java.base/java.util.concurrent.Executors$PrivilegedThreadFactory$1.run(Executors.java:699)
	at java.base/java.lang.Thread.run(Thread.java:833)