chore(env): remove custom coverage exclusions and clean up versioning

Author: mrz1836

.github/.env.custom

@@ -17,11 +17,10 @@
 #
 # ================================================================================================
 
-# Custom Coverage Exclusions
-GO_COVERAGE_EXCLUDE_PATHS=test/,vendor/,testdata/,examples/,plans/,docs/
-
-# Google Analytics Configuration (for coverage pages)
-# GOOGLE_ANALYTICS_ID=
+GO_PRIMARY_VERSION=1.25.x
+GO_SECONDARY_VERSION=1.25.x
+MAGE_X_GO_SECONDARY_VERSION=1.25.x
+MAGE_X_GO_VERSION=1.25.x
 
 # Provider
 GO_COVERAGE_PROVIDER=codecov