RFR: 8376434: Remove AppContext from awt ImageFetcher implementation

[Sergey Bylokhov]

On Tue, 27 Jan 2026 06:06:46 GMT, Phil Race <prr at openjdk.org> wrote:

> Remove AppContext from ImageFetcher

src/java.desktop/share/classes/sun/awt/image/ImageFetcher.java line 290:

> 288:        }
> 289:        final ThreadGroup fetcherGroup = threadGroup;
> 290: 

Why we want main TG the here? In most other places we use "RootThreadGroup"

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PR Review Comment: https://git.openjdk.org/jdk/pull/29441#discussion_r2738143269