Fix prompt length issue (IEC-405)

[sidwarkd]

Checklist

• Component contains License
• Component contains README.md
• Component contains idf_component.yml file with url field defined
• Component was added to upload job
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Change description

When writing the prompt, the length was incorrectly always the size of a char* pointer. The change uses strlen to properly write the correct size of the provided prompt string.

[CLAassistant]

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[sidwarkd]

@SoucheSouche Here is an issue I found with the new component. Otherwise it seems to be working very well.

[SoucheSouche]

@SoucheSouche Here is an issue I found with the new component. Otherwise it seems to be working very well.

@sidwarkd, nice catch! thanks for taking the time to check it out :)
I opened a PR myself with a few fixes here and there and new getter functions (see #597)

[Copilot]

Pull Request Overview

This PR fixes a bug in the esp_linenoise_dumb function where the prompt length was incorrectly calculated using sizeof() instead of strlen().

• Corrects the prompt length calculation when writing the prompt in dumb terminal mode
• Changes from sizeof(config->prompt) to strlen(config->prompt) to properly calculate string length instead of pointer size

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