fix:Fix gqq incorrectly treating Markdown italic as comment (#3125)

[ceasermikes002]

Which issue(s) this PR fixes
The gqq command was incorrectly prepending asterisks to wrapped lines
when formatting Markdown text containing italic formatting (e.g., foo).

Root cause: The reflowParagraph method treated any line starting with
'*' as a comment marker for reStructuredText bullet points.

Fix: Added special handling to only treat '*' as a comment marker when
followed by a space, preserving bullet point behavior while fixing
Markdown formatting.

• Modified src/actions/operator.ts to check for space after asterisk
• Added test cases for both Markdown italic and bullet point scenarios

Fixes #3125"

[ceasermikes002]

@J-Fields