fix(e2e): skip deploying unused default catalog in e2e tests (#2623)

The operatorhubio default catalog is deployed during e2e setup but never
used by any test scenario. All tests create their own isolated catalogs.
Skip it to save time and remove the external dependency.

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

Author: pedjak

Makefile

@@ -319,6 +319,7 @@ test-e2e: KIND_CLUSTER_NAME := operator-controller-e2e
 test-e2e: GO_BUILD_EXTRA_FLAGS := -cover
 test-e2e: COVERAGE_NAME := e2e
 test-e2e: export MANIFEST := $(STANDARD_RELEASE_MANIFEST)
+test-e2e: export INSTALL_DEFAULT_CATALOGS := false
 test-e2e: run-internal image-registry prometheus e2e e2e-coverage kind-clean #HELP Run e2e test suite on local kind cluster
 
 .PHONY: test-experimental-e2e
@@ -328,6 +329,7 @@ test-experimental-e2e: KIND_CONFIG := ./kind-config/kind-config-2node.yaml
 test-experimental-e2e: GO_BUILD_EXTRA_FLAGS := -cover
 test-experimental-e2e: COVERAGE_NAME := experimental-e2e
 test-experimental-e2e: export MANIFEST := $(EXPERIMENTAL_RELEASE_MANIFEST)
+test-experimental-e2e: export INSTALL_DEFAULT_CATALOGS := false
 test-experimental-e2e: PROMETHEUS_VALUES := helm/prom_experimental.yaml
 test-experimental-e2e: E2E_TIMEOUT := 15m
 test-experimental-e2e: run-internal image-registry prometheus e2e e2e-coverage kind-clean #HELP Run experimental e2e test suite on local kind cluster