RecoUtils: Tweak MessageSvc.Format to ensure a blank space before WARNING

I found that with !38479 (merged) we sometimes get messages like:

ToolSvc.CombinedMuonT...MuonTrackSummaryHelperToolWARNING Inconsistent hole count: expected hits eta 2 phi 2 hits eta 1 phi 0 missed eta 1 phi 2 holes eta 1 phi 1 recalculated phi holes 1

eg no space between the component name and the word WARNING. This MR fixes this shortcoming.

This merge request affects 1 package:

• Reconstruction/RecExample/RecExCommon

This merge request affects 1 file:

• Reconstruction/RecExample/RecExCommon/share/RecoUtils.py

Adding @goetz as watcher

added Reconstruction master review-pending-level-1 labels

CI Result SUCCESS (hash f367940b)

	Athena	AthSimulation	AthGeneration	AnalysisBase
externals
cmake
make
required tests
optional tests

Full details available on this CI monitor view
Athena: number of compilation errors 0, warnings 0
AthSimulation: number of compilation errors 0, warnings 0
AthGeneration: number of compilation errors 0, warnings 0
AnalysisBase: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST-CC7 24629]

MR looks good. Approving (L1)

added review-approved label and removed review-pending-level-1 label

merged

mentioned in commit 5ec4842a

added sweep:ignore label