Amogh/optimize login latency backup

[Amoghhosamane]

## Pull Request Details

### Description
This PR resolves a CI lint block where the GitHub Actions workflow was failing due to an invalid dependency constraint.
Specifically, pub.dev does not permit publishable packages to depend on `git` repositories. The `solidpod` dependency was listed as a git reference in `pubspec.yaml`, which triggered the `invalid_dependency` error.

**What was changed:**
1. Replaced the git dependency on `solidpod` with the proper pub.dev version `^0.12.10` in both `pubspec.yaml` and `example/pubspec.yaml`.
2. Synced the branch with all the latest upstream updates by merging the `upstream/dev` branch into `Amogh/optimize_login_latency`.
3. Resolved all resulting merge conflicts across `pubspec.yaml`, `example/pubspec.yaml`, `lib/solidui.dart` (sorting exports alphabetically), and `example/lib/home.dart` (reordering and cleanup of duplicate/conflicting imports).
4. Updated `CHANGELOG.md` to document the fix.

### Related Issues
Fixes #1136

### Type of Change

- [x] Bug fix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
- [ ] This change requires a documentation update

### How To Test?
To verify the fixes and ensure everything compiles and passes lints, run:
```bash
flutter pub get
flutter analyze --fatal-infos

Checklist

• Screenshots included here/in linked issue #
• Changes adhere to the style and coding guidelines
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• Any dependent changes have been merged and published in downstream modules
• The update contains no confidential information
• The update has no duplicated content
• No lint check errors are related to these changes (make prep or flutter analyze lib)
• Integration test dart test output or screenshot included in issue #
• I tested the PR on these devices:
  • Android
  • iOS
  • Linux
  • MacOS
  • Windows
  • Web
• I have identified reviewers
• The PR has been approved by reviewers

Finalising

• Merge dev into the this branch
• Resolve any conflicts
• Add a one line summary into the CHANGELOG.md
• Push to the git repository and review
• Merge the PR into dev