Do not add project creator to direct project members

[varmar05]

There is no need to add project creators as project owners since they must be already workspace admins. Explicit project permissions are reserved for project sharing.

[coveralls]

Pull Request Test Coverage Report for Build 13721764664

Details

• 9 of 9 (100.0%) changed or added relevant lines in 2 files are covered.
• 1 unchanged line in 1 file lost coverage.
• Overall coverage decreased (-0.01%) to 92.282%

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Files with Coverage Reduction	New Missed Lines	%
server/mergin/sync/utils.py	1	83.6%

Totals
Change from base Build 13696057485:	-0.01%
Covered Lines:	6815
Relevant Lines:	7385

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💛 - Coveralls