Top level packages are not included in code completions

[prolativ]

Compiler version

3.1.0-RC2

Minimized code

In a REPL session:

import annot

and press TAB (or invoke code completion in IDE)

Output

No completions are suggested

Expectation

Names of top level packages should be included in completions. In the particular case above the code should expand to

import annotation

The problem is not specific to predef or stdlib and also occurs for packages containing code defined by users

[tgodzik]

Fixed by #14069 - the other problem mentioned in the PR is in a separate issue (package objects)