Make MAL percentile align with OAL percentile calculation and update Grafana dashboards for OAP observability.

[wankai123]

• If this pull request closes/resolves/fixes an existing issue, replace the issue number. Closes #.
• Update the CHANGES log.

[Copilot]

Pull Request Overview

Align MAL percentile calculation with OAL and adjust OAP observability dashboards

• Update histogram_percentile cut points from [50,70,90,99] to [50,75,90,95,99] across MAL, OTel rules, and agent configurations.
• Update e2e expected test fixtures to reflect 75th and 95th percentile outputs.
• Refine OAP Grafana dashboard widget titles by removing “/ min” from latency titles.

Reviewed Changes

Copilot reviewed 20 out of 22 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
test/e2e-v2/cases/profiling/ebpf/network/kubernetes-values.yaml	Align percentiles for eBPF network profiling queries.
test/e2e-v2/cases/profiling/ebpf/network/expected/metrics-has-http1-value-label.yml	Update expected percentiles; add new 95th; adjust label from 70 to 75.
test/e2e-v2/cases/meter/expected/metrics-has-value-label-percentile.yml	Update expected percentiles; add 95th; adjust label from 70 to 75.
test/e2e-v2/cases/go/expected/metrics-has-value-label-percentile.yml	Update expected percentiles; add 95th; adjust label from 70 to 75.
test/e2e-v2/cases/apisix/expected/metrics-has-latency-value-label.yml	Update expected percentiles and add 95th across multiple metric groups.
oap-server/server-starter/src/main/resources/ui-initialized-templates/so11y_oap/so11y-instance.json	Remove “/ min” from latency titles to better reflect units.
oap-server/server-starter/src/main/resources/otel-rules/oap.yaml	Align percentiles, remove a duplicated metric rule, and keep rules consistent.
oap-server/server-starter/src/main/resources/otel-rules/nginx/nginx-*.yaml	Align percentiles for NGINX service/instance/endpoint rules.
oap-server/server-starter/src/main/resources/otel-rules/kong/kong-*.yaml	Align percentiles for Kong service/instance/endpoint rules.
oap-server/server-starter/src/main/resources/otel-rules/apisix.yaml	Align percentiles for APISIX service/instance/endpoint rules.
oap-server/server-starter/src/main/resources/meter-analyzer-config/network-profiling.yaml	Align percentiles for network profiling meter rules.
oap-server/server-starter/src/main/resources/meter-analyzer-config/java-agent.yaml	Align percentiles for Java agent tracing context performance.
oap-server/server-starter/src/main/resources/meter-analyzer-config/go-runtime.yaml	Align percentiles for Go runtime histograms.
oap-server/server-starter/src/main/resources/meter-analyzer-config/go-agent.yaml	Align percentiles for Go agent tracing context performance.
docs/en/concepts-and-designs/lal.md	Update example to new percentile cut points.
docs/en/changes/changes.md	Record MAL percentile alignment and dashboard updates.

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