config: update verbatimModuleSyntax in lenient tsconfig.json

[dv-usama-ansari]

What is verbatimModuleSyntax?

• https://www.typescriptlang.org/tsconfig/#verbatimModuleSyntax
• https://typescript-eslint.io/blog/consistent-type-imports-and-exports-why-and-how/#verbatim-module-syntax

Why do we need it?

• Without verbatimModuleSyntax:

We see no errors when an import which can be used only as a type. This would lead to increased bundle size, since it would also compile the imports within the module.
Also, coming from datavisyn/visyn_core@274fcfb#diff-c767fb22b4d7242d9d2848e5d53d098f77647cf31592ceed92875cbafdce2684, we have run into this problem where the module contained interfaces as well as React imports from a component and the bundler messed up the entire setup which led everything to crash

• With verbatimModuleSyntax enabled:

We see errors right in the editor which suggests to import type instead of the interface name so that it is excluded from bundling.
These lint errors are autofixable (unfortunately not from the CLI)