fix: search dialog throw an exception due to missing FlutterQuillLocalizations.delegate in the editor

[EchoEllet]

Description

When using the shortcut for showing the search dialog in the editor, you will get an exception due to missing FlutterQuillLocalizations.delegate.

Related Issues

it also seems that the option for SearchButtonType in:

QuillToolbar.simple(
    configurations: QuillSimpleToolbarConfigurations(
      searchButtonType: SearchButtonType.legacy,
    ),
  )

Will be ignored when showing the search dialog using a shortcut and will always use QuillToolbarSearchDialog.

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 package version in pubspec.yaml files.
• All existing and new tests are passing.
• I have run the commands in ./scripts/before_push.sh and it all passed successfully

Breaking Change

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

• Yes, this is a breaking change (please indicate that with a ! in the title as explained in Conventional Commits).
• No, this is not a breaking change.