update "Can't convert" warning to match others in homeassistant_sensor

[PlainTechEnthusiast]

What does this implement/fix?

This change includes the entity_id in warning log messages when the value can't be converted to a number. This matches the inclusion of the entity_id with the other log messages from the component.

Types of changes

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Other

Test Environment

• ESP32
• ESP32 IDF
• ESP8266
• RP2040

Checklist:

• The code change is tested and works locally.
• Tests have been added to verify that the new code works (under tests/ folder).

If user exposed functionality or configuration variables are added/changed:

• NA [ ] Documentation added/updated in esphome-docs.

[probot-esphome]

Hey there @OttoWinter, mind taking a look at this pull request as it has been labeled with an integration (homeassistant) you are listed as a code owner for? Thanks!
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