Dynamic agent label with `hw.arch.x86&&sw.os.linux&&ci.agent.dynamic` doesn't work

If no idle agent we'd like to trigger a dynamic agent for linux-x64 if specify label `[hw.arch.x86&&sw.os.linux&&ci.agent.dynamic](https://ci.adoptium.net/label/hw.arch.x86&&sw.os.linux&&ci.agent.dynamic/)`. However no agent was triggered [[hw.arch.x86&&sw.os.linux&&ci.agent.dynamic](https://ci.adoptium.net/label/hw.arch.x86&&sw.os.linux&&ci.agent.dynamic/)](https://ci.adoptium.net/view/Test_grinder/job/Grinder/8689/console) as expected. If the dynamic agents configuration has been changed?

Start by reproducing the label request from the Grinder job 8689 console output and inspect the dynamic-agent configuration that handles hw.arch.x86, sw.os.linux, and ci.agent.dynamic. Done means the linux-x64 dynamic agent is triggered when no matching idle agent is available, with the behavior confirmed by a new or updated test.

Written by the indexing model from the issue text.