Spack bugfixes

• Fix --reuse with upstreams set in an environment (#29680)
• config add: fix parsing of validator error to infer type from oneOf (#29475)
• Fix spack -C command_line_scope used in conjunction with other flags (#28418)
• Use Spec.constrain to construct spec lists for stacks (#28783)
• Fix bug occurring when searching for inherited patches in packages (#29574)
• Fixed a few bugs when manipulating symlinks (#28318, #29515, #29636)
• Fixed a few minor bugs affecting command prompt, terminal title and argument completion (#28279, #28278, #28939, #29405, #29070, #29402)
• Fixed a few bugs affecting the spack ci command (#29518, #29419)
• Fix handling of Intel compiler environment (#29439)
• Fix a few edge cases when reindexing the DB (#28764)
• Remove "Known issues" from documentation (#29664)
• Other miscellaneous bugfixes (0b72e070583fc5bcd016f5adc8a84c99f2b7805f, #28403, #29261)