GH-86907
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Validate extension JSON: Error: Field 'classes/AudioStreamPlayer/methods/is_autoplay_enabled': is_const changed value in new API, from false to true.
Validate extension JSON: Error: Field 'classes/AudioStreamPlayer2D/methods/is_autoplay_enabled': is_const changed value in new API, from false to true.
Validate extension JSON: Error: Field 'classes/AudioStreamPlayer3D/methods/is_autoplay_enabled': is_const changed value in new API, from false to true.
Validate extension JSON: Error: Field 'classes/GLTFBufferView/methods/get_buffer': is_const changed value in new API, from false to true.
Validate extension JSON: Error: Field 'classes/GLTFBufferView/methods/get_byte_length': is_const changed value in new API, from false to true.
Validate extension JSON: Error: Field 'classes/GLTFBufferView/methods/get_byte_offset': is_const changed value in new API, from false to true.
Validate extension JSON: Error: Field 'classes/GLTFBufferView/methods/get_byte_stride': is_const changed value in new API, from false to true.
Validate extension JSON: Error: Field 'classes/GLTFBufferView/methods/get_indices': is_const changed value in new API, from false to true.

Change AudioStreamPlayer* is_autoplay_enabled and GLTFBufferView getters to be const.
