fix(import): bump fl_lib for the UTF-8 clipboard import fix

[GT-610]

What

Bumps packages/fl_lib from b688e50 to 5b77fae (lollipopkit/fl_lib#56), which fixes clipboard import of any JSON containing non-ASCII text.

Why

showImportDialog's clipboard branch built its bytes with Uint8List.fromList(text.codeUnits). codeUnits is UTF-16, and the Uint8List constructor keeps only the low byte of each unit, so 启 (U+542F) became 0x2F and 动 (U+52A8) became 0xA8 — a continuation byte with no lead byte in front of it. Both callers decode strictly (utf8.decode in the backup page), so the import failed with FormatException: Unexpected extension byte.

ASCII survived by construction, its low byte being the whole code unit, which is why this went unnoticed until a snippet or server name was Chinese. It affected snippet import and bulk server import alike; the file and network branches pass real bytes and never had the problem.

The fix is utf8.encode(text) in the library. This PR only carries the submodule pointer; the code change and its reasoning live in lollipopkit/fl_lib#56.

Closes #1513

Summary by CodeRabbit

• Chores
  • Updated the embedded library version to include the latest available changes.

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📝 Walkthrough

Walkthrough

The packages/fl_lib submodule reference changes from commit b688e50518fa3314f99b639885c88c54411fcd4e to 5b77fae4221b4b6b86cf12b8a84438a6458eb853. No exported or public declarations change.

Suggested reviewers: lollipopkit

Priority: ➖ Normal

Change: Bug fix · Severity of issue fixed: Medium

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly identifies the fl_lib submodule bump and the included UTF-8 clipboard import fix. It matches the main change and is concise.
Linked Issues check	✅ Passed	The change updates packages/fl_lib from b688e50 to 5b77fae. The PR summary identifies this target commit as containing the UTF-8 clipboard import fix from lollipopkit/fl_lib#56. This replaces …
Out of Scope Changes check	✅ Passed	The whole-PR diff contains only the packages/fl_lib submodule pointer update. The stated change targets clipboard imports and leaves file and network imports unchanged. This matches the scope of #15…
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0…

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