fix(mocks): search the physical columns only in the viewer

viewdata.sas drops the derived columns in the vwsearch data step that
mp_searchdata then reads, so a search matches on the columns the grid shows.
The mock handed the full column list, so a search could match a row on a
derived column that is never displayed.

sas/mocks/sasjs/services/public/viewdata.js

@@ -134,7 +134,10 @@ if (tableData && tableData.columns) {
 
     let rows
     if (searchType) {
-        const matches = filteredRows.filter(row => rowMatchesSearch(row, tableData.columns, searchType, searchVal))
+        // the derived columns are dropped before the search, so only the
+        // physical columns are searched (viewdata.sas drops them in the
+        // vwsearch data step mp_searchdata then reads)
+        const matches = filteredRows.filter(row => rowMatchesSearch(row, physicalColumns, searchType, searchVal))
         // mp_searchdata caps its output at outobs=&DC_MAXOBS_WEBVIEW, and
         // viewdata.sas then keeps only `if _n_<&DC_MAXOBS_WEBVIEW` of them.
         nobs = Math.min(matches.length, maxObsWebView)