bug: input elements do not participate in HTMLFormElement.reset()

**Ionic version:**
No framework. Vanilla JS
Calling Ionic CDN directly

**I'm submitting a ...**

[x ] bug report
[ ] feature request

**Current behavior:**
After resetting a form - form.reset() - a value set programmatically does not show in the ion-input. If any text is entered in the ion-input and then a value is set programmatically, the value does show

**Expected behavior:**
Setting a value should always show the value in the input field

**Steps to reproduce:**
This fiddle shows the bug. Follow the instructions in the fiddle

https://jsfiddle.net/dexster/vk0d73oz/23/

Start with the linked JSFiddle and reproduce the behavior using a vanilla JS Ionic CDN form and ion-input. Trace how form.reset() affects the component and programmatic values; done means the value consistently appears in the input after resetting, including the reproduction steps.

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