Remove `thiserror` from `bevy_text` #50555

Job	Run time
build (windows-latest)	9m 7s
miri	15m 32s
toml	1m 49s
ci	4m 43s
build (ubuntu-latest)	4m 38s
build (macos-latest)	4m 28s
typos	7s
check-bevy-internal-imports	5s
check-doc	12m 6s
check-missing-examples-in-docs	30s
run-examples-macos-metal	7m 39s
check-missing-features-in-docs	30s
markdownlint	1m 9s
check-compiles	6m 24s
build-wasm	1m 36s
build-wasm-atomics	1m 55s
msrv	2m 3s
	1h 14m 21s

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