Add missing add_resource_template() to MCPServer #3761

Job	Run time
checks / readme-snippets	13s
checks / pre-commit	57s
checks / docs	56s
checks / test (3.10, lowest-direct, ubuntu-latest)	1m 30s
checks / test (3.11, locked, ubuntu-latest)	1m 20s
checks / test (3.14, locked, windows-latest)	2m 4s
checks / test (3.11, lowest-direct, windows-latest)	1m 46s
checks / test (3.13, lowest-direct, ubuntu-latest)	1m 7s
checks / test (3.12, locked, ubuntu-latest)	1m 42s
checks / test (3.10, lowest-direct, windows-latest)	1m 54s
checks / test (3.11, lowest-direct, ubuntu-latest)	1m 25s
checks / test (3.13, locked, windows-latest)	1m 59s
checks / test (3.12, locked, windows-latest)	1m 57s
checks / test (3.12, lowest-direct, windows-latest)	2m 9s
checks / test (3.13, lowest-direct, windows-latest)	1m 56s
checks / test (3.10, locked, windows-latest)	1m 39s
checks / test (3.14, lowest-direct, ubuntu-latest)	1m 26s
checks / test (3.12, lowest-direct, ubuntu-latest)	1m 28s
checks / test (3.11, locked, windows-latest)	1m 54s
checks / test (3.14, lowest-direct, windows-latest)	1m 42s
checks / test (3.10, locked, ubuntu-latest)	1m 31s
checks / test (3.14, locked, ubuntu-latest)	1m 24s
checks / test (3.13, locked, ubuntu-latest)	1m 16s
all-green	6s
	35m 21s

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