Add mdatagen replace option to check-contrib target (#11223)

#### Description
This PR addresses the issue of contrib tests not testing the updated
mdatagen version. It modifies the `check-contrib` and `restore-contrib`
targets in the Makefile to ensure that the contrib tests use the local
version of the `mdatagen` package.

#### Link to tracking issue
Fixes #11167 

#### Testing
All existing tests pass with `make test`

Signed-off-by: Prateek Kumar <85689959+PrateekKumar1709@users.noreply.github.com>

Makefile

@@ -262,6 +262,7 @@ check-contrib:
 	@$(MAKE) -C $(CONTRIB_PATH) for-all CMD="$(GOCMD) mod edit \
 		-replace go.opentelemetry.io/collector=$(CURDIR) \
 		-replace go.opentelemetry.io/collector/client=$(CURDIR)/client \
+		-replace go.opentelemetry.io/collector/cmd/mdatagen=$(CURDIR)/cmd/mdatagen \
 		-replace go.opentelemetry.io/collector/component=$(CURDIR)/component  \
 		-replace go.opentelemetry.io/collector/component/componentprofiles=$(CURDIR)/component/componentprofiles  \
 		-replace go.opentelemetry.io/collector/component/componentstatus=$(CURDIR)/component/componentstatus  \
@@ -333,6 +334,7 @@ restore-contrib:
 	@$(MAKE) -C $(CONTRIB_PATH) for-all CMD="$(GOCMD) mod edit \
 		-dropreplace go.opentelemetry.io/collector \
 		-dropreplace go.opentelemetry.io/collector/client \
+		-dropreplace go.opentelemetry.io/collector/cmd/mdatagen \
 		-dropreplace go.opentelemetry.io/collector/component \
 		-dropreplace go.opentelemetry.io/collector/component/componentprofiles \
 		-dropreplace go.opentelemetry.io/collector/component/componentstatus \