Fixes of camera test failures

[pascal-roth]

Description

Addresses failures in following tests

| /workspace/isaaclab/source/isaaclab/test/sensors/test_multi_tiled_camera.py                              |  FAILED |    12.70 |   6/7   |
| /workspace/isaaclab/source/isaaclab/test/sensors/test_ray_caster_camera.py                               |  FAILED |    32.08 |  18/21  |
| /workspace/isaaclab/source/isaaclab/test/sensors/test_multi_mesh_ray_caster_camera.py                    |  FAILED |    29.77 |  16/20  |
| /workspace/isaaclab/source/isaaclab/test/sensors/test_tiled_camera.py                                    |  FAILED |    84.63 |  57/61  |

• test_ray_caster_camera.py and test_multi_mesh_ray_caster_camera.py fail in the comparison to the USD Camera, here the position of the USD camera is set via set_world_poses_from_view which calls the fabric backend. I can track in the usd that the pos and orientation is applied correctly but the position seems not correctly updated in the backend - camera remains at (0, 0, 0) at least judging its output. Generally the positions seem off, prev. test that described a mean depth of 2.7 now only reach 2.23 such as in the tiled camera test. ran the same tests with a prev IsaacSim version. Position, orientations, intrinsics, ... of the cameras are identical, as are the other configs, however mean depth reaches 2.73. In a different test I had to remove a set offset for it to succeed. -- SOMETHING IS REALLY OFF WITH THE POSITIONS
• test_tiled_camera.py has an issue with the cpu pipeline, the code randomly gets stuck, no error.
• test_multi_tiled_camera.py is fixed - when updating the colors, I had to do sim.reset() to let it take effect

Type of change

• Bug fix (non-breaking change which fixes an issue)

Checklist

• I have read and understood the contribution guidelines
• I have run the pre-commit checks with ./isaaclab.sh --format
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• I have updated the changelog and the corresponding version in the extension's config/extension.toml file
• I have added my name to the CONTRIBUTORS.md or my name already exists there