Is this a regression?

• Yes, this behavior used to work in the previous version

The previous version in which this bug was not present was

No response

Description

coerceNumberProperty(thing, undefined) works the same way as coerceNumberProperty(thing), so it yields 0 if the thing isn't coercible to number. This is quite unexpected, because:

1. In all other cases the fallback argument is respected.
2. The return type is different: coerceNumberProperty(thing, undefined) returns number | undefined, even though the implementation always yields number.

Reproduction

StackBlitz link:
Steps to reproduce:
1.
2.

Expected Behavior

Fallback argument should be respected even for undefined.

Actual Behavior

undefined isn't respected as a fallback.

Environment

• Angular: 17.0.6
• CDK/Material: 17.1.0
• Browser(s): *
• Operating System (e.g. Windows, macOS, Ubuntu): *