indexing multiline TRANSCRIPT xml

Description For content in the TRANSCRIPT xml that uses line breaks, INDEXMEDIATRACK doesn't transform content past the first line

Steps to Reproduce

Have an oral history with TRANSCRIPT xml that includes line breaks, like:

    <cue>
        <speaker>Test Speaker One </speaker>
        <start>31</start>
        <end>36</end>
        <transcript>It’s six o clock in the morning on the farm of Elton Woodside, near Clinton,
            Prince Edward Island. </transcript>
        <translation_fr>Il est six heures du matin dans la ferme d'Elton Woodside, près de Clinton, Île-du-Prince-Édouard.</translation_fr>
        <translation_ch>早上六点钟在Elton Woodside的农场附近，靠近克林顿，爱德华王子岛。</translation_ch>
        <translation_hi>यह क्लिंटन के पास एल्टन वुडसाइड के खेत पर सुबह छह बजे है, प्रिंस एडवर्ड द्वीप।</translation_hi>

View INDEXMEDIATRACK datastream

Expected Behaviour All content is transformed into , it would look something like this:

<cue>
<start>31</start>
<end>36</end>
<speaker>Test Speaker One </speaker>
<vtt_text>It’s six o clock in the morning on the farm of Elton Woodside, near Clinton,
            Prince Edward Island. </vtt_text>
</cue>

Actual Behaviour All content after the first line is cut off in INDEXMEDIATRACK's element.

Notes Discovered when testing https://github.com/digitalutsc/islandora_solution_pack_oralhistories/issues/75

Islandora-Labs / islandora_solution_pack_oralhistories

indexing multiline TRANSCRIPT xml #81