Fix `mapdl.get` always asking for multiline output when using `item3` #5978

Job	Run time
Documentation style check	24s
Local: Build & test on Ubuntu	13m 0s
Remote: Build & test (v23.1.0, false)	14m 5s
Local: Build & test minimal package on Ubuntu	11m 17s
Remote: Build & test (v23.2.0, false)	11m 36s
Remote: Build & test (v24.1.0, false)	12m 7s
Local: Build & test on Windows	0s
Build and smoke tests (ubuntu-latest, 3.8, false)	2m 45s
Build and smoke tests (ubuntu-latest, 3.9, false)	3m 5s
Build and smoke tests (ubuntu-latest, 3.10, false)	1m 50s
Build and smoke tests (ubuntu-latest, 3.11, false)	2m 27s
Build and smoke tests (windows-latest, 3.8, false)	4m 21s
Build and smoke tests (windows-latest, 3.9, false)	3m 57s
Build and smoke tests (windows-latest, 3.10, false)	4m 32s
Build and smoke tests (windows-latest, 3.11, false)	4m 47s
Build documentation	27m 43s
Upload dev documentation	0s
release	0s
Deploy dev index docs	0s
Notify failed build	0s
Upload release documentation	0s
Deploy stable docs index	0s
	1h 57m 56s

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