test: regenerate goldens for 9 uniform-grid WENO5 tests after SOS reformulation

Algebraically equivalent change shifts FP outputs by ~1 ulp, amplified
through nonlinear WENO weights to ~2.3% per-point relative on the most
sensitive axisymmetric/acoustic-source tests. Verified via convergence
study: ||SOS - master||_inf shrinks at >5x WENO5 truncation rate, both
forms converging to the same physical limit.

Affected tests:
- 059D137F: 2D Hypoelasticity 1 Fluid Axisymmetric
- 3E23CB5D: 2D Acoustic Source Transducer Array
- 6FE484B5: 2D Axisymmetric HLL
- 7A9F4EF4: 2D Example axisym_shockbubble
- 7C2FF26F: 2D Acoustic Source Transducer Gaussian
- 7E15602E: 2D Acoustic Source Transducer Sine
- B2CBB9FE: 2D Acoustic Source Transducer Delay
- B89B8C70: 2D Axisymmetric model_eqns=3
- DB670E50: 2D Axisymmetric model_eqns=2

Full local 568-test suite passes (44m, serial debug).

Author: sbryngelson