Fix custom task run name rendering #17555

Job	Run time
docker, python:3.9	5m 14s
docker, python:3.10	5m 10s
Server Tests - python:3.9, postgres:14	5m 24s
docker, python:3.11	5m 24s
Server Tests - python:3.10, postgres:14	5m 34s
docker, python:3.12	6m 22s
Server Tests - python:3.11, postgres:14	5m 13s
Server Tests - python:3.12, postgres:14	7m 19s
Server Tests - python:3.9, sqlite	7m 17s
Server Tests - python:3.10, sqlite	7m 44s
Server Tests - python:3.11, sqlite	7m 28s
Server Tests - python:3.12, sqlite	9m 51s
Client Tests - python:3.9, postgres:14	7m 25s
Client Tests - python:3.10, postgres:14	7m 10s
Client Tests - python:3.11, postgres:14	7m 46s
Client Tests - python:3.12, postgres:14	9m 55s
Runner and Worker Tests - python:3.9, postgres:14	2m 15s
Runner and Worker Tests - python:3.10, postgres:14	2m 8s
Runner and Worker Tests - python:3.11, postgres:14	2m 21s
Runner and Worker Tests - python:3.12, postgres:14	2m 50s
combine-coverage	41s
	2h 0m 31s

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