Bugfix/KBDEV-1143: Ensembl loader not show displayName correctly

[sshugsc]

When running the refseq and ensembl loader, the displayName is same as the name column, which should be [sourceId.toUpperCase()].[sourceIdVersion].
Figured out it is because the fetchDisplayName function returns the content.name by default.
Tested with some refseq and ensembl records:

orientdb {db=test_shirley5}> select sourceId, displayName, name from Feature where source.displayName="RefSeq" and deletedAt is null limit 5
+----+------------+------------+------------+
|#   |sourceId    |displayName |name        |
+----+------------+------------+------------+
|0   |nm_001006118|NM_001006118|nm_001006118|
|1   |np_055391   |NP_055391   |np_055391   |
|2   |np_620310   |NP_620310   |np_620310   |
|3   |np_620311   |NP_620311   |np_620311   |
|4   |np_001185747|NP_001185747|np_001185747|
+----+------------+------------+------------+

orientdb {db=test_shirley5}> select displayName, sourceId, sourceIdVersion, name from Feature where source.displayName="Ensembl" and deletedAt is null order by createdAt desc limit 5
+----+---------------+-----------------+---------------+---------------+
|#   |sourceId       |displayName      |sourceIdVersion|name           |
+----+---------------+-----------------+---------------+---------------+
|0   |enst00000361789|ENST00000361789  |               |enst00000361789|
|1   |enst00000361789|ENST00000361789.2|2              |enst00000361789|
|2   |ensg00000198727|ENSG00000198727  |               |ensg00000198727|
|3   |ensg00000198727|ENSG00000198727.2|2              |ensg00000198727|
|4   |enst00000361681|ENST00000361681  |               |enst00000361681|
+----+---------------+-----------------+---------------+---------------+

[github-actions]

Unit Test Results

0 files  ±0  0 suites  ±0   0s ⏱️ ±0s
0 tests ±0  0 ✔️ ±0  0 💤 ±0  0 ❌ ±0 

Results for commit 1339729. ± Comparison against base commit af3e76e.