Show sort icons only on sortable table headers

[Copilot]

Sort icons were being injected into all <table> headers site-wide, including static tables (e.g., SOC) that have no sorting behavior.

Change

Scope the sort icon/click-handler loop to only table.js-sort-table elements — consistent with how Tablesort is already initialized:

// Before
document.querySelectorAll("table").forEach((table) => {

// After
document.querySelectorAll("table.js-sort-table").forEach((table) => {

This ensures sort icons appear exclusively on tables opted into sorting via the js-sort-table class.

[sabaronett]

Looks good on local web server

[Copilot]

Pull request overview

This PR scopes sort icon injection and click-handler wiring to only tables explicitly opted into sorting via the js-sort-table class, aligning behavior with existing Tablesort initialization and preventing icons from appearing on static tables.

Changes:

• Change the sort icon / header click-handler loop selector from table to table.js-sort-table.

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[sabaronett]

Re-approving