Correct implicit coercions in relational operators to adopt typescript 5.0

Since TypeScript 5.0, there is a break change that implicit coercions in relational operators are forbidden [1].

So that the following code in flink-runtime-web/web-dashboard/src/app/components/humanize-date.pipe.ts get error:

public transform(
  value: number | string | Date,
  ...
): string | null | undefined {
  if (value == null || value === '' || value !== value || value < 0) {
    return '-';
  } 
  ...
}

The correctness improvement is availble in here [2].

I think we should optimize this type of code for better compatibility.

[1] https://devblogs.microsoft.com/typescript/announcing-typescript-5-0/#forbidden-implicit-coercions-in-relational-operators

[2] https://github.com/microsoft/TypeScript/pull/52048