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Fix InputDecoration helper/error padding is not compliant (#176353 )

## Description

This PR fixes the InputDecoration helper/error padding.
When a counter is defined, this PR fixes the width of the gap between
helper/error and the counter.

M3 specs:

<img width="1090" height="430" alt="Screenshot 2025-10-07 at 5 36 05 PM"
src="https://github.com/user-attachments/assets/cf83b30b-4cfb-4379-8cb0-7e35cd5fe414"
/>


## Before

<img width="759" height="172" alt="image"
src="https://github.com/user-attachments/assets/b8f733f5-4688-478a-b475-06130e4f6691"
/>

## After

<img width="759" height="172" alt="image"
src="https://github.com/user-attachments/assets/a40eb328-8447-4c24-9ced-95ea619f2e1c"
/>

## Related Issue

Fixes [InputDecoration helper/error end padding is not compliant with M3
spec](https://github.com/flutter/flutter/issues/175993)

## Tests

- Adds 2 tests. One to verify the new padding. Another to verify the
change in intrinsic height calculation. This second test does not fail
without the PR but it would have failed if the PR changes only the
padding and did not update the intrinsic height logic.
- Updates 1 test related to the gap between error/helper and counter.

2025-10-08 01:20:29 +00:00

lib

Fix InputDecoration helper/error padding is not compliant (#176353 )

2025-10-08 01:20:29 +00:00

test

Fix InputDecoration helper/error padding is not compliant (#176353 )

2025-10-08 01:20:29 +00:00

test_fixes

…

test_private

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test_profile

fix typo in test_profile/README.md (#174384 )

2025-08-26 22:12:21 +00:00

test_release

Add error handling for Element lifecycle user callbacks (#173148 )

2025-08-14 19:53:20 +00:00

analysis_options.yaml

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build.yaml

…

dart_test.yaml

…

LICENSE

…

pubspec.yaml

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README.md

…

README.md

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