fix hardware cursor rendering on rotated/flipped monitors

[JaSha256]

Replace the broken cairo_matrix_rotate() approach with explicit per-transform pattern matrices for all 8 wl_output_transform values.

Describe your PR, what does it fix/add?

Problem

• cursor appears distorted, offset, or invisible on monitors with non-normal wl_output_transform
• Old code used cairo_matrix_rotate(M_PI_2 * TR) which treats values 4-7 (flipped variants) as rotation angles — producing wrong results
• This was marked as a known bug (FIXME: this is wrong, and doesn't work for 5, 6 and 7)

Fix

• Replace rotate + translate with explicit Cairo matrixes
• Each matrix directly encodes the inverse mapping (destination → source) including scaling

All 8 wl_output_transform variants should be handled correctly:

NORMAL, 90, 180, 270,

as well as

FLIPPED, FLIPPED_90, FLIPPED_180, FLIPPED_270

[github-actions]

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[vaxerski]

tnx!