Build error: 'some' types cannot be used in constraints on existential types

[fl034]

I have a protocol with this generic function that gets formatted into a build error.

• Swift format version 0.58.2
• Xcode 26.0.1
• .swiftformat file:

# options
--maxwidth 120

# rules
--importgrouping alphabetized
--indent 4
--indentcase false
--self remove
--selfrequired 
--trimwhitespace always
--xcodeindentation disabled

#Disabled Rules
--disable andOperator
--disable preferKeyPath
--disable redundantType
--disable wrapMultilineStatementBraces

#Enabled Rules
--enable markTypes

#Exlude Files
--exclude **/*.generated.swift