fix: skip eager token refresh when OAuth metadata is unavailable (#3240) #3834

Job	Run time
checks / readme-snippets	11s
checks / docs	59s
checks / pre-commit	26s
checks / test (3.11, lowest-direct, windows-latest)	1m 50s
checks / test (3.10, lowest-direct, ubuntu-latest)	1m 27s
checks / test (3.10, locked, ubuntu-latest)	1m 30s
checks / test (3.12, locked, ubuntu-latest)	1m 37s
checks / test (3.10, locked, windows-latest)	1m 57s
checks / test (3.11, lowest-direct, ubuntu-latest)	1m 26s
checks / test (3.13, lowest-direct, windows-latest)	2m 7s
checks / test (3.14, lowest-direct, windows-latest)	1m 39s
checks / test (3.13, lowest-direct, ubuntu-latest)	1m 19s
checks / test (3.14, lowest-direct, ubuntu-latest)	1m 7s
checks / test (3.12, locked, windows-latest)	1m 56s
checks / test (3.11, locked, windows-latest)	2m 0s
checks / test (3.13, locked, ubuntu-latest)	1m 20s
checks / test (3.10, lowest-direct, windows-latest)	2m 4s
checks / test (3.13, locked, windows-latest)	1m 48s
checks / test (3.11, locked, ubuntu-latest)	1m 22s
checks / test (3.14, locked, ubuntu-latest)	1m 20s
checks / test (3.12, lowest-direct, windows-latest)	2m 9s
checks / test (3.12, lowest-direct, ubuntu-latest)	1m 28s
checks / test (3.14, locked, windows-latest)	2m 16s
all-green	3s
	35m 21s

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