message: docs: add note about strictTemplates and strictNullChecks together
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diff: @@ -109,6 +109,7 @@ In case of a false positive like these, there are a few options:
  * Use the [`$any()` type-cast function](guide/template-syntax#any-type-cast-function) in certain contexts to opt out of type-checking for a part of the expression.
  * You can disable strict checks entirely by setting `strictTemplates: false` in the application's TypeScript configuration file, `tsconfig.json`.
  * You can disable certain type-checking operations individually, while maintaining strictness in other aspects, by setting a _strictness flag_ to `false`.
  +* If you want to use `strictTemplates` and `strictNullChecks` together, you can opt out of strict null type checking specifically for input bindings via `strictNullInputTypes`.
  |Strictness flag|Effect|
  |-|-|
  