fix: failing to import insomnia collection when username/password in …

…auth is null (#3293)

* fix: sanitize authentication input
 edgecase where value is null instead of expected empty string

* fix: refactor to be immutable

* Revert "fix: refactor to be immutable"

This reverts commit eec0e51.

packages/bruno-app/src/utils/importers/insomnia-collection.js

@@ -60,6 +60,7 @@ const addSuffixToDuplicateName = (item, index, allItems) => {
 const regexVariable = new RegExp('{{.*?}}', 'g');
 
 const normalizeVariables = (value) => {
+ value = value || '';
  const variables = value.match(regexVariable) || [];
  each(variables, (variable) => {
  value = value.replace(variable, variable.replace('_.', '').replaceAll(' ', ''));