Failure output: avoid using the 'same as' logic for suppressed values

[frankban]

For a DeepEquals test, you could have an output like:

error:
  values are not deep equal
diff (-got +want):
    []any{
            struct{ Strings []any; Ints []int }{Strings: {string("who"), string("dalek")}, Ints: {42}},
            string("extra line 1"),
  -         string("extra line 2"),
  -         string("extra line 3"),
    }
got:
  <suppressed due to length (11 lines), use -v for full output>
want:
  <same as got>

I've found the <same as got> in this case a bit confusing, as it seems to refer more to the actual value, rather than the suppressed message.

With this branch, the output is now more explicit:

error:
  values are not deep equal
diff (-got +want):
    []any{
            struct{ Strings []any; Ints []int }{Strings: {string("who"), string("dalek")}, Ints: {42}},
            string("extra line 1"),
  -         string("extra line 2"),
  -         string("extra line 3"),
    }
got:
  <suppressed due to length (11 lines), use -v for full output>
want:
  <suppressed due to length (11 lines), use -v for full output>

[TeodorPt]

LGTM