3707 Kusto Icon Fix (#12621)

* 3707 Changed getIconpath in serverTreeRenderer to always set iconPath if iconId is undefined. Changed renderConnection to always renderServerIcon

* 3707 Added default flag to KustoIcon in package.json

* fix caching issue

* 3707 Changed default to optional variable. Updated asyncServerTreeRenderer > getIconPath to check for default

* 3707 Changed logic for setting iconPath in getIconPath

Co-authored-by: chgagnon <chgagnon@microsoft.com>

src/sql/platform/capabilities/common/capabilitiesService.ts

@@ -22,7 +22,7 @@ export const clientCapabilities = {
 
 export interface ConnectionProviderProperties {
 	providerId: string;
-	iconPath?: URI | IconPath | { id: string, path: IconPath }[]
+	iconPath?: URI | IconPath | { id: string, path: IconPath, default?: boolean }[]
 	displayName: string;
 	notebookKernelAlias?: string;
 	azureResource?: string;