[RTL] Add support for image dynamic updating, padding, tooltips and size in percent. #11960

Job	Run time
📊 Static checks / Code style, file formatting, and docs	3m 1s
🌐 Web / Template (target=template_release)	2m 0s
🍏 iOS / Template (target=template_release)	3m 5s
🐧 Linux / Editor w/ Mono (target=editor)	51m 49s
🐧 Linux / Editor with doubles and GCC sanitizers (target=editor, tests=yes, dev_build=yes, scu_build=yes, precision=double, use_asan=yes, use_ubsan=yes, linker=gold)	52m 16s
🍎 macOS / Editor (target=editor, tests=yes)	43m 55s
🐧 Linux / Editor with clang sanitizers (target=editor, tests=yes, dev_build=yes, use_asan=yes, use_ubsan=yes, use_llvm=yes, linker=lld)	55m 6s
🏁 Windows / Editor (target=editor, tests=yes)	1h 25m 11s
🍎 macOS / Template (target=template_release)	24m 22s
🐧 Linux / Editor with ThreadSanitizer (target=editor, tests=yes, dev_build=yes, use_tsan=yes, use_llvm=yes, linker=lld)	35m 54s
🤖 Android / Template (target=template_release)	55m 46s
🏁 Windows / Template (target=template_release)	53m 47s
🐧 Linux / Template w/ Mono (target=template_release)	35m 31s
🐧 Linux / Minimal template (target=template_release, everything disabled)	2m 16s
🪲 Godot CPP / Build and test Godot CPP	11m 57s
	8h 35m 56s

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