[WPE] WPE Platform: do not force headless platform to AR24 linear buffer format

[carlosgcampos]

e4c64c9

[WPE] WPE Platform: do not force headless platform to AR24 linear buffer format
https://bugs.webkit.org/show_bug.cgi?id=280263

Reviewed by Adrian Perez de Castro.

When used with swrast, shared memory buffers are used with ARGB8888
format, but when using a GPU there's no reason to force a format. We can
remove the implementation of get_preferred_dma_buf_formats and implement
get_egl_display instead, so that WPEDisplay will build the list of
formats supported by the EGL display.

* Source/WebKit/WPEPlatform/wpe/headless/WPEDisplayHeadless.cpp:
(wpeDisplayHeadlessDispose):
(wpeDisplayHeadlessGetEGLDisplay):
(wpe_display_headless_class_init):
(wpeDisplayHeadlessGetPreferredDMABufFormats): Deleted.

Canonical link: https://commits.webkit.org/284205@main

e31212c

Misc	iOS, visionOS, tvOS & watchOS	macOS	Linux	Windows
✅ 🧪 style	✅ 🛠 ios	✅ 🛠 mac	✅ 🛠 wpe	✅ 🛠 win
	✅ 🛠 ios-sim	✅ 🛠 mac-AS-debug	✅ 🧪 wpe-wk2	✅ 🧪 win-tests
✅ 🧪 webkitperl	✅ 🧪 ios-wk2	✅ 🧪 api-mac	✅ 🧪 api-wpe
	✅ 🧪 ios-wk2-wpt	🧪 mac-wk1	✅ 🛠 wpe-cairo
	🧪 api-ios	✅ 🧪 mac-wk2	✅ 🛠 gtk
	✅ 🛠 vision	✅ 🧪 mac-AS-debug-wk2	❌ 🧪 gtk-wk2
	✅ 🛠 vision-sim	✅ 🧪 mac-wk2-stress	✅ 🧪 api-gtk
	✅ 🧪 vision-wk2	✅ 🧪 mac-intel-wk2
✅ 🛠 🧪 unsafe-merge	✅ 🛠 tv
	✅ 🛠 tv-sim
	✅ 🛠 watch
	✅ 🛠 watch-sim

[webkit-early-warning-system]

EWS run on current version of this PR (hash e31212c)

Misc	iOS, visionOS, tvOS & watchOS	macOS	Linux	Windows
✅ 🧪 style	✅ 🛠 ios	✅ 🛠 mac	✅ 🛠 wpe	✅ 🛠 win
	✅ 🛠 ios-sim	✅ 🛠 mac-AS-debug	✅ 🧪 wpe-wk2	✅ 🧪 win-tests
✅ 🧪 webkitperl	✅ 🧪 ios-wk2	✅ 🧪 api-mac	✅ 🧪 api-wpe
	✅ 🧪 ios-wk2-wpt	🧪 mac-wk1	✅ 🛠 wpe-cairo
	🧪 api-ios	✅ 🧪 mac-wk2	✅ 🛠 gtk
	✅ 🛠 vision	✅ 🧪 mac-AS-debug-wk2	❌ 🧪 gtk-wk2
	✅ 🛠 vision-sim	✅ 🧪 mac-wk2-stress	✅ 🧪 api-gtk
	✅ 🧪 vision-wk2	✅ 🧪 mac-intel-wk2
✅ 🛠 🧪 unsafe-merge	✅ 🛠 tv
	✅ 🛠 tv-sim
	✅ 🛠 watch
	✅ 🛠 watch-sim

[webkit-commit-queue]

Committed 284205@main (e4c64c9): https://commits.webkit.org/284205@main

Reviewed commits have been landed. Closing PR #34160 and removing active labels.