add no-cov to interop tests

Author: anshalshukla

.github/workflows/ci.yml

@@ -134,6 +134,7 @@ jobs:
         run: |
           uv run pytest tests/interop/ \
             -v \
+            --no-cov \
             --timeout=120 \
             -x \
             --tb=short \

tests/interop/helpers/node_runner.py

@@ -490,14 +490,14 @@ async def start_all(
         # Now that the mesh is formed, validators can publish blocks/attestations
         # and they will propagate to all mesh peers.
         #
-        # Reset genesis time to 2 seconds in the future.
+        # Reset genesis time to 6 seconds in the future.
         #
         # The initial genesis_time was a rough estimate set before phases 1-3.
         # Setting genesis slightly ahead gives the validator service time to
         # start its event loop and be ready when slot 1's interval 0 arrives.
         # On 2-core CI runners, starting at "now" causes the validator to
         # miss interval 0 of early slots due to event loop contention.
-        fresh_genesis = Uint64(int(time.time()) + 2)
+        fresh_genesis = Uint64(int(time.time()) + 6)
         for node_wrapper in self.nodes:
             object.__setattr__(node_wrapper.node.clock, "genesis_time", fresh_genesis)