Improve chainbase mapped and heap behavior #4618

Job	Run time
Discover Versions	2s
Run Platforms Workflow / Discover Platforms	5s
Run Platforms Workflow / Build Platforms	0s
Run Platforms Workflow / Platform Matrix	3s
Run Build Workflow / Build leap (ubuntu20)	8m 25s
Run Build Workflow / Build leap (ubuntu22)	7m 9s
Tests (ubuntu20)	3m 13s
LR Tests (ubuntu20)	23m 56s
Tests (ubuntu22)	3m 12s
Build leap-dev package (ubuntu20)	10m 51s
LR Tests (ubuntu22)	23m 42s
NP Tests (ubuntu20)	7m 33s
Build leap-dev package (ubuntu22)	10m 3s
NP Tests (ubuntu22)	6m 9s
libtester tests (ubuntu20, build-tree)	9m 21s
libtester tests (ubuntu20, make-dev-install)	8m 40s
libtester tests (ubuntu20, deb-install)	4m 37s
libtester tests (ubuntu22, build-tree)	8m 3s
libtester tests (ubuntu22, make-dev-install)	8m 0s
libtester tests (ubuntu22, deb-install)	4m 27s
All Required Tests Passed	1s
	2h 27m 32s

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