CKFTracking: disable RTTI type checks until EICrecon conforms to ODR (#…

…551)

### Briefly, what does this PR introduce?
Workaround for #340

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

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

### Does this PR introduce breaking changes? What changes might users
need to make to their code?
No

### Does this PR change default behavior?
No

src/algorithms/tracking/CKFTracking.cc

@@ -60,7 +60,7 @@ namespace eicrecon {
 
         m_geoSvc = geo_svc;
 
-        m_BField = std::dynamic_pointer_cast<const eicrecon::BField::DD4hepBField>(m_geoSvc->getFieldProvider());
+        m_BField = std::static_pointer_cast<const eicrecon::BField::DD4hepBField>(m_geoSvc->getFieldProvider());
         m_fieldctx = eicrecon::BField::BFieldVariant(m_BField);
 
         // eta bins, chi2 and #sourclinks per surface cutoffs