httpRequest method doesn't work when the token is invalid

[brionmario]

Describe the issue:

ATM, before the httpRequest is invoked, we do a validation check on the user's authentication status.

• https://github.com/asgardeo/asgardeo-auth-spa-sdk/blob/v3.1.1/lib/src/client.ts#L512C1-L517C1

    public async httpRequest(config: HttpRequestConfig): Promise<HttpResponse | undefined> {
        await this._validateMethod(config.attachToken);
  
        return this._client?.httpRequest(config);
    }

But a recent addition is added to the isAuthenticated() method to validate the access token expiry date as well.
This works for checking the authenticated status of the user but when the token is invalid, httpRequest method has the capability to refresh the token but that logic is newer reached due to await this._validateMethod(config.attachToken);

How to reproduce:

• Let the token expire
• Trigger an API that uses the httpRequest method.
• Observe that the API request is not triggered and an exception is thrown.

Expected behavior:

httpRequest should continue and the token should be refreshed if invalid.

Environment information (Please complete the following information; remove any unnecessary fields) :

• Product Version: [e.g., IS 5.10.0, IS 5.9.0]
• OS: [e.g., Windows, Linux, Mac]
• Browser: [e.g., Chrome, Firefox]
• SDK Version: [e.g., 0.1.0, 0.1.1]