fix(l1): fix breakdown pie chart (#5202)

**Motivation**

The `Execution Breakdown` pie chart was broken after #5084

**Description**

This PR is a quick fix of the pie chart, the idea is to have a complete
rework in a follow-up PR but for now it serves to avoid showing
misleading info, now the chart effectively measures
`execute_block_pipeline` + the sync store step after it:
- Now that Block Execution and Merkleization are part of
`execute_block_pipeline` we removed the Trie update measure
(merkleization) from the chart because it will be happening concurrently
with execution.
- We added a new `Other (pipeline diff)` measure, that takes the whole
`execute_block_pipeline` and removes the execution from it (aka the
missing merkleization measure).

| Main | This PR |
| ---- | ---- |
| <img width="741" height="427" alt="image"
src="https://github.com/user-attachments/assets/3025cd92-6355-4365-92de-f9eb4039d97e"
/> | <img width="744" height="465" alt="image"
src="https://github.com/user-attachments/assets/7e2f7784-0666-4984-aef8-cd39e10f6ca7"
/> |

Author: rodrigo-o

metrics/provisioning/grafana/dashboards/common_dashboards/ethrex_l1_perf.json

@@ -1249,7 +1249,7 @@
         {
           "disableTextWrap": false,
           "editorMode": "code",
-          "expr": "(\n  sum by (function_name) (\n    increase(function_duration_seconds_sum{job=\"$job\", instance=~\"$instance(:\\\\d+)?$\", function_name!=\"Block execution\"}[$__range])\n  )\n)\nor\nlabel_replace(\n  sum( increase(function_duration_seconds_sum{job=\"$job\", instance=~\"$instance(:\\\\d+)?$\", function_name=\"Block execution\"}[$__range]) )\n  - sum( increase(function_duration_seconds_sum{job=\"$job\", instance=~\"$instance(:\\\\d+)?$\", function_name=~\"Storage read|Account read|Account Read\"}[$__range]) ),\n  \"function_name\",\"Block execution (without db)\",\"__name__\",\".*\"\n)",
+          "expr": "(\n  sum by (function_name) (\n    increase(function_duration_seconds_sum{job=\"$job\", instance=~\"$instance(:\\\\d+)?$\", function_name!~\"Block execution|Execute Block|Trie update\"}[$__range])\n  )\n)\nor\nlabel_replace(\n  sum( increase(function_duration_seconds_sum{job=\"$job\", instance=~\"$instance(:\\\\d+)?$\", function_name=\"Block execution\"}[$__range]) )\n  - sum( increase(function_duration_seconds_sum{job=\"$job\", instance=~\"$instance(:\\\\d+)?$\", function_name=~\"Storage read|Account read|Account Read\"}[$__range]) ),\n  \"function_name\",\"Block execution (without db)\",\"__name__\",\".*\"\n)\nor\nlabel_replace(\n  sum( increase(function_duration_seconds_sum{job=\"$job\", instance=~\"$instance(:\\\\d+)?$\", function_name=\"Execute Block\"}[$__range]) )\n  - sum( increase(function_duration_seconds_sum{job=\"$job\", instance=~\"$instance(:\\\\d+)?$\", function_name=\"Block execution\"}[$__range]) ),\n  \"function_name\",\"Other (Pipeline Diff)\",\"__name__\",\".*\"\n)",
           "fullMetaSearch": false,
           "includeNullMetadata": false,
           "legendFormat": "__auto",
@@ -2569,5 +2569,5 @@
   "timezone": "utc",
   "title": "Ethrex L1 - Perf Dashboard",
   "uid": "beoru4vp59yiof",
-  "version": 29
+  "version": 30
 }