fix: escape single quotes in narrow links

[moksha-hub]

Add single quote (') to the list of characters that are dot-encoded in narrow link URLs. Some software with URL detection heuristics may interpret a single quote as the end of a URL, causing links to break.

This aligns with the behavior needed for consistent URL detection across different platforms and messaging clients.

Fixes #2105

[chrisbobbe]

This PR needs tests before it can be reviewed. Also please edit the commit message to follow the project guidelines.

[gnprice]

Marking this as draft for now to get it out of our queue. @moksha-hub please go ahead and unmark this PR as draft when it's ready for review.

[moksha-hub]

I've added the requested tests for single quote escaping and updated the commit message.

Regarding the CI failure: The build failed with a Java compilation error in the firebase_messaging dependency (cannot find symbol method fromIntent(Intent) in FlutterShellArgs). This seems to be an upstream issue with the CI environment or dependencies and is unrelated to the changes in this PR (which only touch Dart code in internal_link.dart).

@gnprice @chrisbobbe Please let me know The failure wasn't related to my side of issue I guess..
Thank you.