fix: ensure materializer starting after consumer died doesn't log an error

[icehaunter]

Closes #3657

[codecov]

❌ 1 Tests Failed:

Tests completed	Failed	Passed	Skipped
2040	1	2039	0

View the top 3 failed test(s) by shortest run time

Elixir.Electric.Plug.RouterTest::test secure mode allows access to /v1/health without secret

Stack Traces | 2.06s run time

2) test secure mode allows access to /v1/health without secret (Electric.Plug.RouterTest)
     .../electric/plug/router_test.exs:3293
     Assertion failed, no matching message after 2000ms
     The following variables were pinned:
       ref = #Reference<0.1384138126.2533359619.27800>
     Showing 1 of 1 message in the mailbox
     code: assert_receive {:stack_status, ^ref, :ready}
     mailbox:
       pattern: {:stack_status, ^ref, :ready}
       value:   {:stack_status, #Reference<0.1384138126.2533359619.27800>, {:connection_error, %{error: "%Postgrex.Error{\n  message: nil,\n  postgres: %{\n    code: :too_many_connections,\n    line: \"359\",\n    message: \"sorry, too many clients already\",\n    file: \"proc.c\",\n    unknown: \"FATAL\",\n    severity: \"FATAL\",\n    pg_code: \"53300\",\n    routine: \"InitProcess\"\n  },\n  connection_id: nil,\n  query: nil\n}", message: "sorry, too many clients already", type: :insufficient_resources, total_retry_time: 0}}}
     stacktrace:
       (electric 1.2.11) test/support/component_setup.ex:462: Support.ComponentSetup.with_complete_stack/1
       Electric.Plug.RouterTest.__ex_unit_describe_8/1

Elixir.Electric.Plug.RouterTest::test /v1/shapes - admission control tracks initial and existing requests separately

Stack Traces | 2.06s run time

1) test /v1/shapes - admission control tracks initial and existing requests separately (Electric.Plug.RouterTest)
     .../electric/plug/router_test.exs:2129
     Assertion failed, no matching message after 2000ms
     The following variables were pinned:
       ref = #Reference<0.623362914.4144234498.138509>
     Showing 1 of 1 message in the mailbox
     code: assert_receive {:stack_status, ^ref, :ready}
     mailbox:
       pattern: {:stack_status, ^ref, :ready}
       value:   {:stack_status, #Reference<0.623362914.4144234498.138509>, {:connection_error, %{error: "%Postgrex.Error{\n  message: nil,\n  postgres: %{\n    code: :too_many_connections,\n    line: \"357\",\n    message: \"sorry, too many clients already\",\n    file: \"proc.c\",\n    unknown: \"FATAL\",\n    severity: \"FATAL\",\n    pg_code: \"53300\",\n    routine: \"InitProcess\"\n  },\n  connection_id: nil,\n  query: nil\n}", message: "sorry, too many clients already", type: :insufficient_resources, total_retry_time: 0}}}
     stacktrace:
       (electric 1.2.11) test/support/component_setup.ex:462: Support.ComponentSetup.with_complete_stack/1
       Electric.Plug.RouterTest.__ex_unit_describe_4/1

Elixir.Electric.Plug.RouterTest::test /v1/shapes GET splits up updates into 2 operations if PK was changed

Stack Traces | 2.07s run time

1) test /v1/shapes GET splits up updates into 2 operations if PK was changed (Electric.Plug.RouterTest)
     .../electric/plug/router_test.exs:886
     Assertion failed, no matching message after 2000ms
     The following variables were pinned:
       ref = #Reference<0.1384138126.2533359619.28496>
     Showing 1 of 1 message in the mailbox
     code: assert_receive {:stack_status, ^ref, :ready}
     mailbox:
       pattern: {:stack_status, ^ref, :ready}
       value:   {:stack_status, #Reference<0.1384138126.2533359619.28496>, {:connection_error, %{error: "%Postgrex.Error{\n  message: nil,\n  postgres: %{\n    code: :too_many_connections,\n    line: \"359\",\n    message: \"sorry, too many clients already\",\n    file: \"proc.c\",\n    unknown: \"FATAL\",\n    severity: \"FATAL\",\n    pg_code: \"53300\",\n    routine: \"InitProcess\"\n  },\n  connection_id: nil,\n  query: nil\n}", message: "sorry, too many clients already", type: :insufficient_resources, total_retry_time: 0}}}
     stacktrace:
       (electric 1.2.11) test/support/component_setup.ex:462: Support.ComponentSetup.with_complete_stack/1
       Electric.Plug.RouterTest.__ex_unit_describe_3/1

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[blacksmith-sh]

Found 3 test failures on Blacksmith runners:

Failures

Test	View Logs
Elixir.Electric.Plug.RouterTest/test /v1/ shapes - admission control tracks initial and existing requests separately	View Logs
Elixir.Electric.Plug.RouterTest/test /v1/ shapes GET splits up updates into 2 operations if PK was changed	View Logs
Elixir.Electric.Plug.RouterTest/test secure mode allows access to /v1/ health without secret	View Logs

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