Fix bug in filter descriptions for partial not() filter inputs

Previously this incorrectly trimmed the suggestion text before
generating the description, which didn't work for partial inputs, and so
the description was often returned in a simplified incomplete format.

Author: pimterry

src/model/filters/search-filters.ts

@@ -1389,7 +1389,10 @@ class NotFilter extends Filter {
     static filterName = "not";
 
     static filterDescription(value: string, isTemplate: boolean) {
-        const innerValue = value.slice(4, -1);
+        const hasFinalBracket = value[value.length - 1] === ')';
+        const innerValue = hasFinalBracket
+            ? value.slice(4, -1)
+            : value.slice(4);
 
         if (innerValue.length === 0) {
             return "exchanges that do not match a given condition"

test/unit/model/filters/search-filter-integration.spec.ts

@@ -1582,6 +1582,7 @@ describe("Search filter model integration test:", () => {
                 ["not(error", "excluding requests that weren't transmitted successfully"],
                 ["not(head", "excluding exchanges by all header values"],
                 ["not(query^=?abc)", "excluding requests with a query string starting with ?abc"],
+                ["not(hostname*=", "excluding requests to a hostname containing a given value"],
                 ["not(method=POST)", "excluding POST requests"]
             ].forEach(([input, expectedOutput]) => {
                 const description = getSuggestionDescriptions(input)[0];