Scheduler: document `@Scheduled#executionMaxDelay()` #45401

Job	Run time
Attach pull request number	4s
CI Sanity Check	33s
Initial JDK 17 Build	11m 23s
Calculate Test Jobs	10s
JVM Tests - JDK 17	7m 0s
Kubernetes Tests - JDK ${{ matrix.java.name }}	0s
JVM Tests - JDK 21	5m 51s
Gradle Tests - JDK ${{ matrix.java.name }}	0s
Devtools Tests - JDK ${{ matrix.java.name }}	0s
JVM Tests - JDK 17 Windows	7m 57s
Maven Tests - JDK ${{ matrix.java.name }}	0s
Quickstarts Compilation - JDK 17	6m 27s
Native Tests - ${{ matrix.category }}	0s
MicroProfile TCKs Tests	0s
Native Tests - Virtual Thread - ${{ matrix.category }}	0s
Upload build stats to collector	0s
Build report	35s
	40m 0s

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