Fix unhelpful error message for missing dependency keys

[object-Object]

Obtaining file:///home/walksanator/git/mods/HexTweaks
  Installing build dependencies ... done
  Checking if build backend supports build_editable ... done
  Getting requirements to build editable ... done
  Preparing editable metadata (pyproject.toml) ... error
  error: subprocess-exited-with-error
  
  × Preparing editable metadata (pyproject.toml) did not run successfully.
  │ exit code: 1
  ╰─> [51 lines of output]
      Traceback (most recent call last):
        File "/home/walksanator/git/mods/HexTweaks/doc/venv/lib/python3.11/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 167, in prepare_metadata_for_build_editable
          hook = backend.prepare_metadata_for_build_editable
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
      AttributeError: module 'hatchling.build' has no attribute 'prepare_metadata_for_build_editable'
      
      During handling of the above exception, another exception occurred:
      
      Traceback (most recent call last):
        File "/home/walksanator/git/mods/HexTweaks/doc/venv/lib/python3.11/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 353, in <module>
          main()
        File "/home/walksanator/git/mods/HexTweaks/doc/venv/lib/python3.11/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 335, in main
          json_out['return_val'] = hook(**hook_input['kwargs'])
                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "/home/walksanator/git/mods/HexTweaks/doc/venv/lib/python3.11/site-packages/pip/_vendor/pyproject_hooks/_in_process/_in_process.py", line 176, in prepare_metadata_for_build_editable
          whl_basename = build_hook(metadata_directory, config_settings)
                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "/tmp/pip-build-env-wd76f99z/overlay/lib/python3.11/site-packages/hatchling/build.py", line 78, in build_editable
          return os.path.basename(next(builder.build(wheel_directory, ['editable'])))
                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "/tmp/pip-build-env-wd76f99z/overlay/lib/python3.11/site-packages/hatchling/builders/plugin/interface.py", line 93, in build
          self.metadata.validate_fields()
        File "/tmp/pip-build-env-wd76f99z/overlay/lib/python3.11/site-packages/hatchling/metadata/core.py", line 243, in validate_fields
          _ = self.version
              ^^^^^^^^^^^^
        File "/tmp/pip-build-env-wd76f99z/overlay/lib/python3.11/site-packages/hatchling/metadata/core.py", line 128, in version
          self._version = self._get_version()
                          ^^^^^^^^^^^^^^^^^^^
        File "/tmp/pip-build-env-wd76f99z/overlay/lib/python3.11/site-packages/hatchling/metadata/core.py", line 222, in _get_version
          core_metadata = self.core
                          ^^^^^^^^^
        File "/tmp/pip-build-env-wd76f99z/overlay/lib/python3.11/site-packages/hatchling/metadata/core.py", line 174, in core
          metadata_hook.update(self.core_raw_metadata)
        File "/tmp/pip-build-env-wd76f99z/overlay/lib/python3.11/site-packages/hatch_gradle_version/plugins/metadata_hook/base.py", line 35, in update
          self.parse_dependencies(self.dependencies),
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "/tmp/pip-build-env-wd76f99z/overlay/lib/python3.11/site-packages/hatch_gradle_version/common/decorators.py", line 13, in wrapper
          return list(func(*args, **kwargs))
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "/tmp/pip-build-env-wd76f99z/overlay/lib/python3.11/site-packages/hatch_gradle_version/plugins/metadata_hook/base.py", line 58, in parse_dependencies
          yield self.parse_gradle_dependency(dependency)
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "/tmp/pip-build-env-wd76f99z/overlay/lib/python3.11/site-packages/hatch_gradle_version/plugins/metadata_hook/gradle_properties.py", line 24, in parse_gradle_dependency
          gradle_version = GradleVersion.from_properties(
                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        File "/tmp/pip-build-env-wd76f99z/overlay/lib/python3.11/site-packages/hatch_gradle_version/common/gradle.py", line 47, in from_properties
          raw_version=str(p[key].data),
                          ~^^^^^
        File "/tmp/pip-build-env-wd76f99z/overlay/lib/python3.11/site-packages/jproperties.py", line 274, in __getitem__
          raise KeyError("Key not found")
      KeyError: 'Key not found'
      [end of output]
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
error: metadata-generation-failed

× Encountered error while generating package metadata.
╰─> See above for output.