fix(frontend): type stripe casing (#2371)

# Description

Please include a summary of the changes and the related issue. Please
also include relevant motivation and context.

## Checklist before requesting a review

Please delete options that are not relevant.

- [ ] My code follows the style guidelines of this project
- [ ] I have performed a self-review of my code
- [ ] I have commented hard-to-understand areas
- [ ] I have ideally added tests that prove my fix is effective or that
my feature works
- [ ] New and existing unit tests pass locally with my changes
- [ ] Any dependent changes have been merged

## Screenshots (if appropriate):

frontend/lib/components/Stripe/PricingModal/components/PricingTable/types/Types.ts

@@ -1,6 +1,7 @@
 import * as React from "react";
 
 declare global {
+  // eslint-disable-next-line @typescript-eslint/no-namespace
   namespace JSX {
     interface IntrinsicElements {
       "stripe-pricing-table": React.DetailedHTMLProps<

frontend/lib/components/Stripe/PricingModal/components/PricingTable/types/types.d.ts

@@ -1,12 +0,0 @@
-import * as React from "react";
-
-declare global {
-  namespace JSX {
-    interface IntrinsicElements {
-      "stripe-pricing-table": React.DetailedHTMLProps<
-        React.HTMLAttributes<HTMLElement>,
-        HTMLElement
-      >;
-    }
-  }
-}