Change fECal outer radius to 195 cm (Table value) (#602)

### Briefly, what does this PR introduce?
Change the fECal outer radius to 195 cm according to the detector
geometry Table.

### What kind of change does this PR introduce?
- [ ] Bug fix (issue #__)
- [ ] New feature (issue #__)
- [ ] Documentation update
- [x] Other: Detector size update

### Please check if this PR fulfills the following:
- [ ] Tests for the changes have been added
- [ ] Documentation has been added / updated
- [x] Changes have been communicated to collaborators

### Does this PR introduce breaking changes? What changes might users
need to make to their code?
No breaking changes. Users do not need to update their code.

### Does this PR change default behavior?
No.

compact/definitions.xml

@@ -514,7 +514,7 @@ Service gaps in FW direction (before endcapP ECAL) and BW direction (before endc
     <constant name="EcalEndcapP_zmax"               value="EcalEndcapP_zmin + EcalEndcapP_length"/>
     <constant name="EcalEndcapP_rmin"               value="200.0*mm" />
     <comment> extra 50cm rmax that "protrudes" into the HCAL</comment>
-    <constant name="EcalEndcapP_rmax"               value="floor(Eta1_4_tan * EcalEndcapP_zmin)"/>
+    <constant name="EcalEndcapP_rmax"               value="195.0*cm"/>
     <constant name="EcalEndcapP_numLayers"          value="1"/>
 
     <constant name="EcalEndcapPInsert_zmin"           value="EcalEndcapP_zmin"/>