fix(performance): Fix EAP transaction summary method filter and duration breakdown chart

[mjq]

Fix two issues with the EAP transaction summary page and improve the duration breakdown chart.

Method filter mismatch

When the performance-transaction-summary-eap flag is enabled, dashboard widget links filter by request.method (the EAP field name), but the transaction summary search bar didn't recognize it as a valid key. This caused an "Invalid key" error when navigating from dashboards. Now the search bar accepts request.method when EAP is enabled, and the dashboard link uses the correct field name based on the flag.

Duration breakdown chart

The EAP version of the duration breakdown chart now matches the regular (non-EAP) version:

• removed the extra p90 percentile
• uses high-fidelity time intervals
• aliases series names to match the standard format (e.g. p50() instead of p50(span.duration))
• persists legend selection via the unselectedSeries URL query parameter.

Note that this is now a line chart instead of an area chart. As per our Choosing The Plot Type guide:

Only use area charts if you want to plot multiple series and those series represent components of a total. For example, area charts are a good choice to show time spent, broken down by span operation. They are not a good choice for plotting a single duration time series. Area charts should be stacked!

Screens

Old Transaction Summary:

EAP version:

Closes DAIN-1226

[cursor]

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[linear]

DAIN-1226 EAP support for Duration Breakdown widget