title: PrimeNG p-inputNumber with currency does not force input only of numbers using mobile devices
body: <p>Im using <code>&lt;p-inputNumber&gt;</code> tag from PrimeNG.</p>
  <p>In computer view, the input only allows to enter numbers. If I press any letter with the keyboard, the letter will not be written on the input. All okey.</p>
  <p>But, when Im using mobile device (android with chrome), the web browser allows me to write anything else.</p>
  <p>I have been reading some posts about force input numeric with basic html <code>&lt;input&gt;</code> tag. But, as I said, I'm using primeng tag <code>&lt;p-inputNumber&gt;</code> with currency options:</p>
  <pre><code>&lt;p-inputNumber [(ngModel)]=&quot;newExpenseAmount&quot; [style]=&quot;{width: '100%'}&quot; mode=&quot;currency&quot; currency=&quot;EUR&quot; locale=&quot;es-ES&quot;&gt;&lt;/p-inputNumber&gt;
  </code></pre>
  <p>¿Any way to make it works fine in mobile devices? ¿Any way to force numeric keyboard on mobile devices compatible with this primeng component?</p>