Texture type validation fixes.

[blueskythlikesclouds]

What problem(s) does this PR solve?

Follow-up to #120876 to solve texture type checks in half/quarter resolution sky textures alongside other tweaks.

Additional information

• I changed get_default_shader_rd to cache the results. Profiling showed this function sometimes taking up to 0.11~ ms, which comes from the shader version mutex.
• UniformSetFormat now accounts for texture type/format, which can catch mismatches at draw time. This caught depth prepass creating uniform sets with texture2D instead of texture2DArray for multiview rendering. This was caused by _setup_render_pass_uniform_set checking for multiview through p_render_data, which is nullptr for depth prepass.
• Now passing the correct multiview shader variants to sky shaders to fix half/quarter resolution texture type mismatches.
• Similarly, fog only sky rendering was also passing incorrect texture types. Now, a separate uniform set for multiview is created and tracked.

[clayjohn]

Looks mostly good, just a small suggested change

[Repiteo]

Thanks!