Add missing TasksCallCapability to enable proper MCP task support #4034

Job	Run time
checks / pre-commit	33s
checks / readme-snippets	10s
checks / test (3.11, highest, windows-latest)	2m 56s
checks / test (3.13, highest, ubuntu-latest)	47s
checks / test (3.10, lowest-direct, windows-latest)	2m 19s
checks / test (3.14, lowest-direct, ubuntu-latest)	1m 9s
checks / test (3.13, lowest-direct, ubuntu-latest)	47s
checks / test (3.10, highest, ubuntu-latest)	48s
checks / test (3.14, highest, ubuntu-latest)	1m 18s
checks / test (3.11, lowest-direct, ubuntu-latest)	45s
checks / test (3.12, highest, ubuntu-latest)	49s
checks / test (3.14, lowest-direct, windows-latest)	2m 21s
checks / test (3.10, lowest-direct, ubuntu-latest)	44s
checks / test (3.14, highest, windows-latest)	2m 21s
checks / test (3.11, lowest-direct, windows-latest)	2m 48s
checks / test (3.12, highest, windows-latest)	3m 34s
checks / test (3.13, highest, windows-latest)	2m 38s
checks / test (3.12, lowest-direct, ubuntu-latest)	50s
checks / test (3.13, lowest-direct, windows-latest)	2m 46s
checks / test (3.10, highest, windows-latest)	2m 58s
checks / test (3.12, lowest-direct, windows-latest)	3m 31s
checks / test (3.11, highest, ubuntu-latest)	48s
	37m 40s

Provide feedback