Fix calculation/validation of layer/mip ranges in create_texture_view

[nical]

Back with some more validation fixes.

Checklist

• [x] Run cargo clippy.
• [x] Add change to CHANGELOG.md. See simple instructions inside file.

Connections

https://bugzilla.mozilla.org/show_bug.cgi?id=1780057

Description

The previous code was doing "selector.layers = base_layer .. count" instead of "base_layer .. base_layer + count" which looked dubious. Same thing for the mip range. It was also not taking the base layer count when in requested_layer_count when the texture was not a texture array which led to invalid ranges and underflow when asking for a non-zero base layer with a (non-array) 2d texture.

The fix consists in:

• writing the ranges as base .. base + count
• always taking the provided base layer into account in the requested layer count even where it doesn't make sense (since it will ensure validation catches the error).

Testing

None

[nical]

Added a commit that checks for integer overflow because the fuzzer told me I had to.