Bruno Leroux 9cf179b88d
Fix InputDatePickerFormField does not inherit local InputDecorationTheme (#177090)
## Description

This PR replaces global `ThemeData.inputDecorationTheme` usage in
`InputDatePickerFormField` with `InputDecorationTheme.of ` which returns
the ambient `InputDecorationTheme`.
It is a follow up to https://github.com/flutter/flutter/pull/168981
which introduces `InputDecorationTheme.of `.

## Related Issue

Fixes [InputDatePickerFormField does not inherit local
InputDecorationTheme](https://github.com/flutter/flutter/issues/177088)

## Tests

- Adds 1 test
2025-10-22 07:51:42 +00:00
..

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