follow up rename variable to reference

[samuelstroschein]

follow up of #3125 which is a nice to have and could be merged but it's not crucial:

• change type: variable to type:variable-reference to align with naming and avoid confusions like https://github.com/opral/monorepo/pull/3125/files#r1761844043
• change type: function to type: function-refernece to align with naming of the TS type and avoid confusions

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[samuelstroschein]

Implemented in #3138