## Summary
The introduction of `HalGPIO` moved the `BatteryMonitor battery` object
into the member function `HalGPIO::getBatteryPercentage()`.
Then, with the introduction of `HalPowerManager`, this function was
moved to `HalPowerManager::getBatteryPercentage()`.
However, the original `BatteryMonitor battery` object is still utilized
by themes for displaying the battery percentage.
This PR replaces these deprecated uses of `BatteryMonitor battery` with
the new `HalPowerManager::getBatteryPercentage()` function.
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### AI Usage
While CrossPoint doesn't have restrictions on AI tools in contributing,
please be transparent about their usage as it
helps set the right context for reviewers.
Did you use AI tools to help write this code? _**NO **_
## Summary
* Fixes#519
* Refactors repeated code into new function:
`ChapterHtmlSlimParser::flushPartWordBuffer()`
## Additional Context
* The `<br/>` tag is self closing and _in-line_, so the existing logic
for closing block tags does not get applied to `<br/>` tags.
* This PR adds the _in-line_ logic to:
* Flush the word preceding the `<br/>` tag from `partWordBuffer` to
`currentTextBlock` before calling `startNewTextBlock`
* **New function**: `ChapterHtmlSlimParser::flushPartWordBuffer()`
* **Purpose**: Consolidates the logic for flushing `partWordBuffer` to
`currentTextBlock`
* **Impact**: Simplifies `ChapterHtmlSlimParser::characterData(…)`,
`ChapterHtmlSlimParser::startElement(…)`, and
`ChapterHtmlSlimParser::endElement(…)` by integrating reused code into
single function
---
### AI Usage
While CrossPoint doesn't have restrictions on AI tools in contributing,
please be transparent about their usage as it
helps set the right context for reviewers.
Did you use AI tools to help write this code? _**NO**_