Repository: angular
Issue: Whitespaces are not trimmed in Text Node with `preserveWhitespaces: false`
Labels: area: core,area: compiler,core: basic template syntax,type: use-case,P3

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# 🐞 bug report

### Affected Package
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The issue is caused by package `@angular/compiler`

### Is this a regression?

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No idea

### Description

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https://github.com/angular/angular/blob/d1ea1f4c7f3358b730b0d94e65b00bc28cae279c/packages/compiler/src/ml_parser/html_whitespaces.ts#L78

```html
<!-- input -->
<span>
  {{ 'text' }}
</span>

<!-- output -->
<span> {{ 'text' }} </span>


<!-- expected -->
<span>{{ 'text' }}</span>
```

There is no way to `trim` the text.


## 🔬 Minimal Reproduction
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## 🌍  Your Environment

**Angular Version:**
<pre><code>
<!-- run `ng version` and paste output below -->
<!-- ✍️-->
Angular CLI: 9.1.1
Node: 12.18.0
OS: darwin x64

Angular: 9.1.2
... animations, common, compiler, compiler-cli, core, forms
... platform-browser, platform-browser-dynamic, router
Ivy Workspace: Yes

Package                           Version
-----------------------------------------------------------
@angular-devkit/architect         0.901.1
@angular-devkit/build-angular     0.901.1
@angular-devkit/build-optimizer   0.901.1
@angular-devkit/build-webpack     0.901.1
@angular-devkit/core              9.1.1
@angular-devkit/schematics        9.1.1
@angular/cdk                      9.2.1
@angular/cli                      9.1.1
@angular/flex-layout              9.0.0-beta.29
@ngtools/webpack                  9.1.1
@schematics/angular               9.1.1
@schematics/update                0.901.1
rxjs                              6.5.5
typescript                        3.8.3
webpack                           4.42.0
</code></pre>

**Anything else relevant?**
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