Fixes https://github.com/flutter/flutter/issues/7037

## Description

This PR fixes two test failures in `basic_test.dart` which surfaced when switching to M3 (see https://github.com/flutter/flutter/pull/127501)

Those failures are related to M3 typography which sets line height to 1.43.

Forcing line height to 1.0 seems reasonable for these particular tests. With this change these two test are successful for both M2 and M3.

## Related Issue

fixes https://github.com/flutter/flutter/issues/129713

## Tests

Updates 2 tests.

Updated tests in dev, examples/api, and tests/widgets to ensure that
they continue to pass when the default for `ThemeData.useMaterial3` is
changed to true.

This is the final set of changes required for
https://github.com/flutter/flutter/issues/127064.

Fixes IgnorePointer and AbsorbPointer to only block user interactions…

Remove 1745 decorative breaks

Reland "Update test font (#121306)"

This reverts commit 9f69a367.

Update test font

* Make Flex,Row,Column const for real

* dart fix --apply

* fix snippets

* fix integration test

* add comment

This reverts commit 5fd259be.

* Adds label attributes

* fix test

* comments

* list equal

This reverts commit 8c44abc0.

* modify: add prefix `Alignment.` for toString of Alignment

This follows https://github.com/flutter/flutter/pull/59364 and cl/319911104

FittedBox is still default to hardEdge clip as new FittedBox is added to Google very quickly. Let's first roll other part of changes into Google first.

Flutter's `moreOrLessEquals` has a few advantages over `closeTo` from
the `matcher` package:

   * It emits the epsilon value in the test result on failure.
   * It uses a named parameter for epsilon, which improves readability
     at the call site.
   * It has a reasonable default for epsilon in cases where something
     more specific isn't required.

Using it also has the nice property that it aids in its own discovery
when when people go looking for such functionality in new tests.

This change also includes a couple unrelated whitespace formatting cleanups.

This reverts commit 0ab5ecc8.