Allow terminalRows to be set at document-level

[sourishkrout]

This comes handy for IaC-based notebooks where you want terminal rows across the document.

PS: Tests fail until new protobufs are published and locked.

[sonarcloud[bot]]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
63.3% Coverage on New Code
0.0% Duplication on New Code

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