Hide knowledge & competition sections of landing page #5536

Job	Run time
build-and-check	2m 32s
test-integration-packages/internal	1m 5s
test-integration-packages/billing	1m 2s
test-integration-common	44s
test-integration-packages/agent-runtime	42s
test-integration-sdk	47s
test-.agents	45s
test-integration-web	39s
test-integration-cli	44s
test-common	39s
test-packages/internal	47s
test-cli	1m 10s
test-packages/billing	47s
test-sdk	43s
test-web	43s
test-packages/agent-runtime	55s
	14m 44s

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