fix: componentDidLoad setTimeouts not cleaned up

[KillerCodeMonkey]

After checking the code of the ion-searchbar i saw that in multiple components timeouts that are defined in componentDidLoad are not cleared when disconnected.

In some circumstances this can lead to unwanted side effects or memory not cleaned up correctly.

Especially the label and searchbar components have in some situations "long" timeouts in ms.

This issue was created because it is needed for the PR: #30851

@thetaPC

[thetaPC]

Thanks for the issue! This has been resolved through your PR and will be available in an upcoming release of Ionic.

[ionitron-bot]

Thanks for the issue! This issue is being locked to prevent comments that are not relevant to the original issue. If this is still an issue with the latest version of Ionic, please create a new issue and ensure the template is fully filled out.