Draft: fix decimals for angular dims

[Roy-043]

The Decimals property did not work for angular Draft Dimensions.

Forum topic: https://forum.freecadweb.org/viewtopic.php?f=23&t=62615

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[freecadci]

for feature branch PR_5079. Pipeline #380645220 was triggered at c581585. All CI branch pipelines.

[berndhahnebach]

Would you rebase to get this commit 5ab525d This should make CI run the build job.

[freecadci]

for feature branch PR_5079. Pipeline #380776941 was triggered at 21ab81f. All CI branch pipelines.