libcamera: Handle missing control info default values
Libcamera does not always provide default values for all control infos, see https://git.libcamera.org/libcamera/libcamera.git/tree/src/ipa/rkisp1/rkisp1.cpp?h=v0.0.2#n98
Sanitize those values, avoiding crashes.
Closes #2856 (closed)