Change PHOTOVOLTAIC to PV

[tiyash-basu-frequenz]

No description provided.

[Copilot]

Pull Request Overview

This PR renames the PHOTOVOLTAIC enum values to the shorter PV variant across two .proto files and updates the release notes accordingly.

• Rename INVERTER_TYPE_PHOTOVOLTAIC to INVERTER_TYPE_PV (and update comment)
• Rename METRIC_CONNECTION_CATEGORY_PHOTOVOLTAIC to METRIC_CONNECTION_CATEGORY_PV (and update comment)
• Update RELEASE_NOTES.md to reflect the new enum names

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
proto/frequenz/api/common/v1/microgrid/electrical_components/inverter.proto	Renamed inverter enum value and updated its comment
proto/frequenz/api/common/v1/metrics/metrics.proto	Renamed metric connection enum value and updated its comment
RELEASE_NOTES.md	Updated release note bullet to reference INVERTER_TYPE_PV

Comments suppressed due to low confidence (3)

proto/frequenz/api/common/v1/microgrid/electrical_components/inverter.proto:22

• Renaming this enum value is a breaking change for any clients depending on the old name. Consider adding a deprecated alias for INVERTER_TYPE_PHOTOVOLTAIC, documenting migration steps, and bumping the API version accordingly.

INVERTER_TYPE_PV = 2;

proto/frequenz/api/common/v1/metrics/metrics.proto:189

• This enum rename will break downstream metrics integrations. Consider deprecating the old METRIC_CONNECTION_CATEGORY_PHOTOVOLTAIC, providing an alias, and updating client/test code to reference the new name.

METRIC_CONNECTION_CATEGORY_PV = 3;

RELEASE_NOTES.md:36

• The bullet still references INVERTER_TYPE_SOLAR; update the description to clearly reflect the change from INVERTER_TYPE_PHOTOVOLTAIC to INVERTER_TYPE_PV and remove any mention of SOLAR to avoid confusion.

* `InverterType.INVERTER_TYPE_SOLAR` to `InverterType.INVERTER_TYPE_PV` (to align with the more colloquial term "PV inverter")

[thomas-nicolai-frequenz]

LGTM