fix(share_plus): resolve js interop lint and maintain minimum sdk

[mdmahendri]

Description

• Add invalid_runtime_check_with_js_interop_types suppression in web_share.dart.

Related Issues

• Related to [Compile]: dart analyze output override warning on sensors_plus #3844
• If this PR and fix(sensors_plus): resolve lint issues found during melos analyze #3845 are merged, the melos run analyze workflow issue will be fully resolved.

Checklist

• I read the Contributor Guide and followed the process outlined there for submitting PRs.
• I titled the PR using Conventional Commits.
• I did not modify the CHANGELOG.md nor the plugin version in pubspec.yaml files.
• All existing and new tests are passing. i run the flutter test on packages\share_plus\share_plus
• The analyzer (flutter analyze) does not report any problems on my PR.

D:\...\share_plus\share_plus>flutter test
00:08 +11 ~4: 4 skipped tests.
00:08 +11 ~4: All other tests passed!

D:\...\share_plus\share_plus>flutter analyze
Analyzing share_plus...
No issues found! (ran in 2.4s)

melos run analyze
  └> melos exec -c 5 -- \
       dart analyze . --fatal-infos
     └> RUNNING

$ melos exec
  └> dart analyze . --fatal-infos
     └> RUNNING (in 25 packages)

------------------------------------------------------------------------------------------------------------------------
...
[share_plus]: Analyzing ....
[share_plus]: No issues found!
[share_plus_example]: Analyzing ....
[share_plus_example]: No issues found!
[share_plus_platform_interface]: Analyzing ....
[share_plus_platform_interface]: No issues found!
...

Breaking Change

Does your PR require plugin users to manually update their apps to accommodate your change?

• No, this is not a breaking change.

[mdmahendri]

The failure in the all_plugins/analyze workflow is expected here, as the sensors_plus lint issue is addressed in a separate PR.