Using `highs_debug_level` causes error - due to `info_` not being defined when using IPM/PDLP before call to `debugHighsLpSolution` in `HighsSolve.cpp`

[jajhall]

Cause of spurious internal error reported by user has been identified as being due to the use of highs_debug_level when using IPM/PDLP

Error is due to info_ not being defined before call to debugHighsLpSolution in HighsSolve.cpp. This debug call need to be removed

Unit test in https://github.com/ERGO-Code/HiGHS/tree/ipx-pdlp-error has been added to TestLpSolvers.cpp