Auth Token value shouldn't be hidden when using a variable.

[AnthonyGrondin]

Description

Currently, a user has the possibility to setup an auth token in the Auth tab of a request.
For security purposes, the data of the Token field is displayed as •••••••••••. But this also mask the value when using a variable, which intrinsically hides the value behind a name.

The value is a variable but we don't know because it's hidden

Expected result

When using a variable as the value of a token in the Token field, it should be displayed as clear text because 99% of the time, the variable name doesn't contain sensitive data. And this would allow a user to know if they are using a variable or not, and what variable is used.

[HoofedEar]

I can make a PR later, but I think this would work? A change in request_auth.py

class BearerTokenForm(Vertical):
    DEFAULT_CSS = """
    BearerTokenForm {
        padding: 1 0;

        & #token-input {
            margin-bottom: 1;
        }

        & #token-empty-label {
            dock: right;
            padding: 0 1;
            color: $text-error;
        }
    }
    """

    def compose(self) -> ComposeResult:
        with Horizontal():
            yield Label("Token")
            yield Label(
                "Should not be empty",
                id="token-empty-label",
            )
        yield VariableInput(
            placeholder="Enter a token",
            password=True,
            validators=[Length(minimum=1)],
            validate_on=["changed"],
            id="token-input",
        )

    def on_mount(self) -> None:
        token_input = self.token_input
        token_input.validate(token_input.value)
        self.update_password_mode(token_input.value)

    @on(Input.Changed)
    def on_input_changed(self, event: Input.Changed) -> None:
        result = event.validation_result
        is_valid = False if result is None else result.is_valid
        label = self.query_one("#token-empty-label", Label)
        label.visible = not is_valid
        self.update_password_mode(event.value)

    def set_values(self, token: str) -> None:
        self.token_input.value = token
        self.update_password_mode(token)

    def get_values(self) -> dict[str, str]:
        return {
            "token": self.token_input.value,
        }

    @property
    def token_input(self) -> Input:
        return self.query_one("#token-input", Input)

    def update_password_mode(self, value: str) -> None:
        is_variable = value.startswith("$")
        inp = self.query_one("#token-input", VariableInput)
        inp.password = not is_variable