Add fast path for indices on non-invertible TransformedGrid

[marcosdanieldasilva]

This PR adds a major performance optimization for finding indices on a TransformedGrid, specifically when it has a non-invertible SequentialTransform (like a Rotate followed by a Morphological transform).

Previously, this situation would fall back to the generic findall(intersects(geometry), domain) method, which is extremely slow because it must perform a costly intersection check for every single cell.

This new, specialized method implements a much faster "partial revert" strategy. It introspects the transform sequence, finds the invertible component (using isinvertible), and reverts the input geometry using only that part. This "un-transforms" the geometry back to the original grid's coordinate space, allowing it to call the existing, highly-optimized indices(grid.mesh, ...) function on the simple, non-deformed grid. A new test is included to validate this exact scenario.

[juliohm]

Thank you @marcosdanieldasilva !

Added a few suggestions to generalize the code:

1. The transform can have multiple steps, so we need to combine all the revertible ones into a new transform in reverse order.
2. We can then just apply the created transform to the geometry.

We still need to check if any transform step needs special treatment.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 87.52%. Comparing base (7c2fbc3) to head (cfb2407).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1264      +/-   ##
==========================================
- Coverage   87.90%   87.52%   -0.38%     
==========================================
  Files         197      197              
  Lines        6240     6246       +6     
==========================================
- Hits         5485     5467      -18     
- Misses        755      779      +24     

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