Update dependency flutter to v3.41.7

[renovate]

This PR contains the following updates:

Package	Update	Change
flutter (source)	patch	3.41.6 → 3.41.7

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Release Notes

flutter/flutter (flutter)

v3.41.7

Compare Source

• flutter/184376 When building an iOS or macOS app, the build may fail due to git multi-pack-index error.
• flutter/184254 When debugging on physical iOS devices and Xcode 26.4+, app often crashes.
• flutter/184689 When using an ffi Windows package, don't require a plugin class.

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