RFR: 8357226: Remove unnecessary List.indexOf from RepaintManager.removeInvalidComponent

[Sergey Bylokhov]

On Mon, 19 May 2025 12:35:13 GMT, Alexey Ivanov <aivanov at openjdk.org> wrote:

>> ok, then it is fine as is.
>
> Yet there could be a logical error anyway… `addInvalidComponent` uses identity comparison when adding a component but `removeInvalidComponent` relies on `equals` method to remove a component.
> 
> If a component overrides `equals`, it could lead to unpredictable behaviour: a wrong component could be removed.

Then it's better to use "==" in all cases, what do you think?

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PR Review Comment: https://git.openjdk.org/jdk/pull/24845#discussion_r2096713898