Angular CLI 7.3.0 generated angular.json contains src/styles.sass entry instead of .scss extension

[hussyd]

🐞 Bug report

Command (mark with an x)

• new
• build
• serve
• test
• e2e
• generate
• add
• update
• lint
• xi18n
• run
• config
• help
• version
• doc

Is this a regression?

-No

Description

Angular CLI 7.3.0 generated angular.json contains src/styles.sass entry instead of .scss extension.
CLI can't build the project.

🔬 Minimal Reproduction

ng new my-app
-Choose Yes
-Choose Sass

🔥 Exception or Error

ERROR in multi ./src/styles.sass
Module not found: Error: Can't resolve 'X:\path\to\my-app\src\styles.sass' in 'X:\path\to\my-app'

🌍 Your Environment

Angular CLI: 7.3.0
Node: 8.11.2
OS: win32 x64
Angular: 7.2.3
... animations, common, compiler, compiler-cli, core, forms
... language-service, platform-browser, platform-browser-dynamic
... router

Package                           Version
-----------------------------------------------------------
@angular-devkit/architect         0.13.0
@angular-devkit/build-angular     0.13.0
@angular-devkit/build-optimizer   0.13.0
@angular-devkit/build-webpack     0.13.0
@angular-devkit/core              7.3.0
@angular-devkit/schematics        7.3.0
@angular/cli                      7.3.0
@ngtools/webpack                  7.3.0
@schematics/angular               7.3.0
@schematics/update                0.13.0
rxjs                              6.3.3
typescript                        3.2.4
webpack                           4.29.0

[alan-agius4]

Duplicate of #13550

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