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When we set the `value` on a `<select>` element we're really just
setting the selected `<option>`. It treats the selected option as the
source of truth, rather than the actual value. This means that if
options are added or removed or their value changes, the `<select>` may
wind up with a different `value` than what's in our model.
This PR resolves this issue by adding a `MutationObserver` to the select
that is used to resync its value to the model whenever the options may
have changed.
(cherry picked from commit
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| .. | ||
| global | ||
| primitives | ||
| resources | ||
| rxjs-interop | ||
| schematics | ||
| src | ||
| test | ||
| testing | ||
| BUILD.bazel | ||
| index.ts | ||
| package.json | ||
| PACKAGE.md | ||
| public_api.ts | ||
| tsconfig-build.json | ||
| tsconfig-test.json | ||