feat: disable toolbar in code block

[LucasXu0]

• disable the toolbar in code block

• fix the icon of the quote so that it expands to the maximum height possible.

[codecov]

Codecov Report

All modified lines are covered by tests ✅

Comparison is base (194fe2f) 80.24% compared to head (c854892) 80.26%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #534      +/-   ##
==========================================
+ Coverage   80.24%   80.26%   +0.01%     
==========================================
  Files         282      282              
  Lines       12042    12053      +11     
==========================================
+ Hits         9663     9674      +11     
  Misses       2379     2379              

Files	Coverage Δ
...t/quote_block_component/quote_block_component.dart	91.42% <100.00%> (+0.25%)	⬆️
lib/src/render/toolbar/toolbar_item.dart	87.50% <100.00%> (+4.89%)	⬆️

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