Chore: Let kbn util infer types (#26907)

* Chore: Let kbn util infer types

Type fixes where needed

* Address review comments + test fix

* Modify kbn method and property names to pascalCase

packages/grafana-data/src/types/data.ts

@@ -43,7 +43,7 @@ export interface QueryResultMeta {
    * Legacy data source specific, should be moved to custom
    * */
   gmdMeta?: any[]; // used by cloudwatch
-  alignmentPeriod?: string; // used by cloud monitoring
+  alignmentPeriod?: number; // used by cloud monitoring
   searchWords?: string[]; // used by log models and loki
   limit?: number; // used by log models and loki
   json?: boolean; // used to keep track of old json doc values

packages/grafana-data/src/valueFormats/valueFormats.ts

@@ -32,7 +32,7 @@ export interface ValueFormatCategory {
   formats: ValueFormat[];
 }
 
-interface ValueFormatterIndex {
+export interface ValueFormatterIndex {
   [id: string]: ValueFormatter;
 }