bug when ignore_string_case=True

[jbones001]

When setting ignore_string_case=True, all the keys in the deepDiff results become lowercase. This is an issue if using the key names to display to the user and you want the original case preserved

[watercloset128]

Same issue probably. When setting ignore_string_case=True, all the keys in the deepDiff results become lowercase. This issue leads to a failed comparison when there are the keys that are case sensitive in json files. Please be realized that it seems only affects the comparison for the string value. For the other keys with other value types, the comparison still works. Please refer to the attached json files and the parameters I set, and output for your reference.

function call: diff = DeepDiff(json1, json2, exclude_paths=exclude_path_list, exclude_regex_paths=exclude_path_reg_list, ignore_string_case=True, verbose_level=2)

exclude_path_list=["root['headers']['uploadedOn']", "root['headers']['path']", "root['headers']['uploadedBy']", "root['headers']['timestamp']", "root['headers']['version']", "root['calibration']['chksum']", "root['runs']['dateInUTC']", "root['runs']['dateOutUTC']", "root['runs']['client']", "root['runs']['WellboreDiameter']", "root['performance_metrics']"]
exclude_path_reg_list=["root\['toolset'\]\[\d+\]\['currentSiteHierarchy'\]", "root\['toolset'\]\[\d+\]\['siteHierarchy'\]", "root\['toolset'\]\[\d+\]\['description'\]", "root\['toolset'\]\[\d+\]\['partnumber'\]", "root\['toolset'\]\[\d+\]\['revisionlevel'\]"]

expected output: {}
actual output: {'values_changed': {"root['headers']['uploadedon']": {...}, "root['headers']['uploadedby']": {...}}}

1738172292455-impulse-results.json

baseline-results.json