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Fixes#15528
# Description
Fixed `kv set` passing the pipeline input to the closure instead of the
value stored in that key.
# User-Facing Changes
Now `kv set` will pass the value in that key to the closure.
# Tests + Formatting
# After Submitting
Fixes#15414 by changing the method used to de-ansi-fy the input. Control characters will now be kept when using `clip copy`, but ANSI escape codes will be removed (when not using `--ansi (-a)`)
# Description
Update some comments and fix potential security issue:
SQL Injection in DELETE statements: The code constructs SQL queries by
interpolating the $key variable directly into the string. If a key
contains malicious input could lead to SQL injection. Need to use
parameterized queries or escaping.
