test: add tests for style directive |important modifier

Author: ota-meshi

tests/fixtures/parser/ast/docs/template-syntax/11-element-directives/05.1-style-property/01-output.json

@@ -47,6 +47,7 @@
                   }
                 }
               },
+              "modifiers": [],
               "range": [
                 5,
                 19
@@ -214,6 +215,7 @@
                   }
                 }
               },
+              "modifiers": [],
               "range": [
                 36,
                 50
@@ -363,6 +365,7 @@
                   }
                 }
               },
+              "modifiers": [],
               "range": [
                 67,
                 81

tests/fixtures/parser/ast/docs/template-syntax/11-element-directives/05.1-style-property/02-output.json

@@ -83,6 +83,7 @@
                   }
                 }
               },
+              "modifiers": [],
               "range": [
                 35,
                 46
@@ -470,6 +471,7 @@
                   }
                 }
               },
+              "modifiers": [],
               "range": [
                 135,
                 146
@@ -708,6 +710,7 @@
                   }
                 }
               },
+              "modifiers": [],
               "range": [
                 235,
                 246
@@ -909,6 +912,7 @@
                   }
                 }
               },
+              "modifiers": [],
               "range": [
                 304,
                 315
@@ -963,6 +967,7 @@
                   }
                 }
               },
+              "modifiers": [],
               "range": [
                 316,
                 327
@@ -1036,6 +1041,7 @@
                   }
                 }
               },
+              "modifiers": [],
               "range": [
                 336,
                 358

tests/fixtures/parser/ast/docs/template-syntax/11-element-directives/05.1-style-property/02.1-input.svelte

@@ -0,0 +1,2 @@
+<!-- Styles can be marked as important -->
+<div style:color|important="red">...</div>