Update rpc.ex

[johndpope]

fixes for upabase-realtime | 08:17:21.484 [debug] file=lib/core/event_handler.ex line=88 Tags missing from tag_values. metric_name:=[:realtime, :rpc] tags:="success" supabase-realtime | 08:17:26.486 [debug] file=lib/core/event_handler.ex line=88 Tags missing from tag_values. metric_name:=[:realtime, :rpc] tags:="success" supabase-realtime | 08:17:31.488 [debug] file=lib/core/event_handler.ex line=88 Tags missing from tag_values. metric_name:=[:realtime, :rpc] tags:="success" supabase-realtime | 08:17:36.490 [debug] file=lib/core/event_handler.ex line=88 Tags missing from tag_values. metric_name:=[:realtime, :rpc] tags:="success" supabase-realtime | 08:17:41.491 [debug] file=lib/core/event_handler.ex line=88 Tags missing from tag_values. metric_name:=[:realtime, :rpc] tags:="success" supabase-realtime | 08:17:46.492 [debug] file=lib/core/event_handler.ex line=88 Tags missing from tag_values. metric_name:=[:realtime, :rpc] tags:="success" supabase-realtime | 08:17:51.494 [debug] file=lib/core/event_handler.ex line=88 Tags missing from tag_values. metric_name:=[:realtime, :rpc] tags:="success" supabase-realtime | 08:17:56.495 [debug] file=lib/core/event_handler.ex line=88 Tags missing from tag_values. metric_name:=[:realtime, :rpc] tags:="success" supabase-realtime | 08:18:01.496 [debug] file=lib/core/event_handler.ex line=88 Tags missing from tag_values. metric_name:=[:realtime, :rpc] tags:="success" supabase-realtime | 08:18:06.497 [debug] file=lib/core/event_handler.ex line=88 Tags missing from tag_values. metric_name:=[:realtime, :rpc] tags:="success" supabase-realtime | 08:18:11.498 [debug] file=lib/core/event_handler.ex line=88 Tags missing from tag_values. metric_name:=[:realtime, :rpc] tags:="success" supabase-realtime | 08:18:16.499 [debug] file=lib/core/event_handler.ex line=88 Tags missing from tag_values. metric_name:=[:realtime, :rpc] tags:="success" supabase-realtime | 08:18:21.500 [debug] file=lib/core/event_handler.ex line=88 Tags missing from tag_values. metric_name:=[:realtime, :rpc] tags:="success" supabase-realtime | 08:18:26.501 [debug] file=lib/core/event_handler.ex line=88 Tags missing from tag_values. metric_name:=[:realtime, :rpc] tags:="success" supabase-realtime | 08:18:31.502 [debug] file=lib/core/event_handler.ex line=88 Tags missing from tag_values. metric_name:=[:realtime, :rpc] tags:="success" supabase-realtime | 08:18:36.503 [debug] file=lib/core/event_handler.ex line=88 Tags missing from tag_values. metric_name:=[:realtime, :rpc] tags:="success" supabase-realtime | 08:18:41.504 [debug] file=lib/core/event_handler.ex line=88 Tags missing from tag_values. metric_name:=[:realtime, :rpc] tags:="success" supabase-realtime | 08:18:46.506 [debug] file=lib/core/event_handler.ex line=88 Tags missing from tag_values. metric_name:=[:realtime, :rpc] tags:="success"

What kind of change does this PR introduce?

Bug fix, feature, docs update, ...

What is the current behavior?

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