Suppress redundant error message in CSM

[henningkayser]

The CSM would spam the log if /joint_states messages includes unkonwn joints. RobotModel::hasJointModel() allows for verifying joint names in a safe way without the error message.

[codecov]

Codecov Report

Patch coverage: 100.00% and project coverage change: -0.01 ⚠️

Comparison is base (b98bb6b) 50.53% compared to head (2df30f9) 50.51%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2222      +/-   ##
==========================================
- Coverage   50.53%   50.51%   -0.01%     
==========================================
  Files         386      386              
  Lines       31736    31736              
==========================================
- Hits        16034    16028       -6     
- Misses      15702    15708       +6     

Impacted Files	Coverage Δ
...anning_scene_monitor/src/current_state_monitor.cpp	74.32% <100.00%> (ø)

... and 3 files with indirect coverage changes

☔ View full report in Codecov by Sentry.
📢 Do you have feedback about the report comment? Let us know in this issue.