Don't keep pointer to QgsPointCloudLayer in QgsPointCloudLayerRenderer and QgsPointCloudLayerProfileGenerator #36559

Job	Run time
build (24.04, 5, true, OFF, ON, ON, ON, ON, OFF, OFF, OFF, OFF, ON, false, ON)	31m 58s
build (39, 6, true, ON, OFF, ON, ON, OFF, OFF, ON, ON, ON, OFF, false, ON)	52m 2s
clang-tidy (24.04, 5)	5m 30s
Run tests (5, ALL_BUT_PROVIDERS)	30m 52s
Run tests (5, POSTGRES)	6m 31s
Run tests (5, HANA)	6m 30s
Run tests (6, ALL_BUT_PROVIDERS)	38m 23s
Run tests (5, ORACLE, 24.04, binary-for-oracle)	6m 10s
	2h 57m 56s

Provide feedback